Therapeutic Management of Children with Vesicoureteral Reflux.

Autor: Chirico V; Pediatric Nephrology and Dialysis Unit, University Hospital 'G. Martino', 98124 Messina, Italy., Tripodi F; Pediatric Nephrology and Dialysis Unit, University Hospital 'G. Martino', 98124 Messina, Italy., Lacquaniti A; Nephrology and Dialysis Unit, Papardo Hospital, 98158 Messina, Italy., Monardo P; Nephrology and Dialysis Unit, Papardo Hospital, 98158 Messina, Italy., Conti G; Pediatric Nephrology and Dialysis Unit, University Hospital 'G. Martino', 98124 Messina, Italy., Ascenti G; Section of Radiological Sciences, Department of Biomedical Sciences and Morphological and Functional Imaging, University Hospital 'G. Martino', 98124 Messina, Italy., Chimenz R; Pediatric Nephrology and Dialysis Unit, University Hospital 'G. Martino', 98124 Messina, Italy.

Publikováno v: Journal of clinical medicine [J Clin Med] 2023 Dec 31; Vol. 13 (1). Date of Electronic Publication: 2023 Dec 31.

The Cardiofaciocutaneous Syndrome: From Genetics to Prognostic-Therapeutic Implications.

Autor: Scorrano G; Department of Pediatrics, 'G. D'Annunzio' University of Chieti-Pescara, 66100 Chieti, Italy., David E; Department of Translational and Precision Medicine, 'Sapienza' University of Rome, 00161 Rome, Italy., Calì E; UCL Queen Square Institute of Neurology, University College London, London WC1N 3BG, UK., Chimenz R; Pediatric Nephrology and Dialysis Unit, University Hospital 'G. Martino', 98124 Messina, Italy., La Bella S; Department of Pediatrics, 'G. D'Annunzio' University of Chieti-Pescara, 66100 Chieti, Italy., Di Ludovico A; Department of Pediatrics, 'G. D'Annunzio' University of Chieti-Pescara, 66100 Chieti, Italy., Di Rosa G; Child Neuropsychiatry Unit, Department of Human Pathology in Adult and Developmental Age 'Gaetano Barresi', University of Messina, 98124 Messina, Italy., Gitto E; Neonatal and Pediatric Intensive Care Unit, Department of Human Pathology of the Adult and Developmental Age 'Gaetano Barresi', University of Messina, 98122 Messina, Italy., Mankad K; Department of Radiology, Great Ormond Street Hospital for Children, London WC1N 3JH, UK., Nardello R; Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialities, 'G. D'Alessandro' University of Palermo, 90127 Palermo, Italy., Mangano GD; Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialities, 'G. D'Alessandro' University of Palermo, 90127 Palermo, Italy., Leoni C; Center for Rare Diseases and Birth Defects, Department of Woman and Child Health and Public Health, Fondazione Policlinico Universitario A. Gemelli IRCCS, 00168 Rome, Italy., Ceravolo G; UCL Queen Square Institute of Neurology, University College London, London WC1N 3BG, UK.

Publikováno v: Genes [Genes (Basel)] 2023 Nov 22; Vol. 14 (12). Date of Electronic Publication: 2023 Nov 22.

Antibiotic Prophylaxis in Infants with Grade III, IV, or V Vesicoureteral Reflux.

Autor: Morello W; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.)., Baskin E; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.)., Jankauskiene A; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.)., Yalcinkaya F; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.)., Zurowska A; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.)., Puccio G; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.)., Serafinelli J; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.)., La Manna A; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.)., Krzemień G; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.)., Pennesi M; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.)., La Scola C; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.)., Becherucci F; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.)., Brugnara M; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.)., Yuksel S; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.)., Mekahli D; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.)., Chimenz R; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.)., De Palma D; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.)., Zucchetta P; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.)., Vajauskas D; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.)., Drozdz D; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.)., Szczepanska M; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.)., Caliskan S; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.)., Lombet J; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.)., Minoli DG; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.)., Guarino S; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.)., Gulleroglu K; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.)., Ruzgiene D; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.)., Szmigielska A; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.)., Barbi E; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.)., Ozcakar ZB; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.)., Kranz A; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.)., Pasini A; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.)., Materassi M; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.)., De Rechter S; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.)., Ariceta G; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.)., Weber LT; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.)., Marzuillo P; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.)., Alberici I; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.)., Taranta-Janusz K; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.)., Caldas Afonso A; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.)., Tkaczyk M; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.)., Català M; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.)., Cabrera Sevilla JE; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.)., Mehls O; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.)., Schaefer F; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.)., Montini G; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.).

Publikováno v: The New England journal of medicine [N Engl J Med] 2023 Sep 14; Vol. 389 (11), pp. 987-997. Date of Electronic Publication: 2023 Sep 12.

HMGB-1 and TGFβ-1 highlight immuno-inflammatory and fibrotic processes before proteinuria onset in pediatric patients with Alport syndrome.

Autor: Chimenz R; Pediatric Nephrology and Dialysis Unit, University Hospital 'G. Martino', Messina, Italy. rchimenz@unime.it., Chirico V; Pediatric Nephrology and Dialysis Unit, University Hospital 'G. Martino', Messina, Italy., Basile P; Pediatric Nephrology and Dialysis Unit, University Hospital 'G. Martino', Messina, Italy., Carcione A; Pediatric Nephrology and Dialysis Unit, University Hospital 'G. Martino', Messina, Italy., Conti G; Pediatric Nephrology and Dialysis Unit, University Hospital 'G. Martino', Messina, Italy., Monardo P; Nephrology and Dialysis Unit, Papardo Hospital, Messina, Italy., Lacquaniti A; Nephrology and Dialysis Unit, Papardo Hospital, Messina, Italy.

Publikováno v: Journal of nephrology [J Nephrol] 2021 Dec; Vol. 34 (6), pp. 1915-1924. Date of Electronic Publication: 2021 Mar 24.

Management of the congenital solitary kidney: consensus recommendations of the Italian Society of Pediatric Nephrology.

Autor: La Scola C; Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria Di Bologna, Via Massarenti 11, 40138, Bologna, Italy. claudio.lascola@aosp.bo.it., Ammenti A; Pediatric Multi-Specialistic Unit, Poliambulatorio Medi-Saluser, Parma, Italy., Bertulli C; Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria Di Bologna, Via Massarenti 11, 40138, Bologna, Italy., Bodria M; Division of Nephrology, Dialysis, Transplantation, and Laboratory On Pathophysiology of Uremia, Istituto G. Gaslini, Genova, Italy., Brugnara M; Pediatria C, Ospedale Donna Bambino, Verona, Italy., Camilla R; Pediatric Nephrology Unit, Regina Margherita Department, Azienda Ospedaliero-Universitaria Città Della Salute E Della Scienza, Torino, Italy., Capone V; Pediatric Nephrology, Dialysis and Transplant Unit. Fondazione Ca' Granda IRCCS, Policlinico Di Milano, Milano, Italy., Casadio L; Unità Operativa Complessa Di Pediatria E Neonatologia, Ospedale Di Ravenna, AUSL Romagna, Ravenna, Italy., Chimenz R; Unità Operativa Di Nefrologia Pediatrica Con Dialisi, Azienda Ospedaliero-Universitaria G. Martino, Messina, Italy., Conte ML; Department of Pediatrics, Infermi Hospital, Rimini, Italy., Conversano E; Institute for Maternal and Child Health-IRCCS Burlo Garofolo, Trieste, Italy., Corrado C; Pediatric Nephrology, 'G. Di Cristina' Hospital, Palermo, Italy., Guarino S; Department of Woman, Child and of General and Specialized Surgery, Università Degli Studi Della Campania 'Luigi Vanvitelli, Napoli, Italy., Luongo I; Unità Operativa Complessa Di Nefrologia E Dialisi, AORN Santobono - Pausilipon, Napoli, Italy., Marsciani M; Unità Operativa Di Pediatria E Terapia Intensiva Neonatale-Pediatrica, Ospedale M Bufalini, Cesena, Italy., Marzuillo P; Department of Woman, Child and of General and Specialized Surgery, Università Degli Studi Della Campania 'Luigi Vanvitelli, Napoli, Italy., Meneghesso D; Unità Operativa Complessa Di Nefrologia Pediatrica - Dialisi E Trapianto, Dipartimento Di Salute Della Donna E del Bambino, Azienda Ospedaliero-Universitaria Di Padova, Padova, Italy., Pennesi M; Institute for Maternal and Child Health-IRCCS Burlo Garofolo, Trieste, Italy., Pugliese F; Pediatric Nephrology Unit, Department of Pediatrics, Marche Polytechnic University, Ancona, Italy., Pusceddu S; Pediatria AUSL, Imola, Italy., Ravaioli E; Department of Pediatrics, Infermi Hospital, Rimini, Italy., Taroni F; Pediatric Nephrology, Dialysis and Transplant Unit. Fondazione Ca' Granda IRCCS, Policlinico Di Milano, Milano, Italy., Vergine G; Department of Pediatrics, Infermi Hospital, Rimini, Italy., Peruzzi L; Pediatric Nephrology Unit, Regina Margherita Department, Azienda Ospedaliero-Universitaria Città Della Salute E Della Scienza, Torino, Italy., Montini G; Pediatric Nephrology, Dialysis and Transplant Unit. Fondazione Ca' Granda IRCCS, Policlinico Di Milano, Milano, Italy.; Giuliana and Bernardo Caprotti Chair of Pediatrics, Department of Clinical Sciences and Community Health, University of Milan, Milano, Italy.

Publikováno v: Pediatric nephrology (Berlin, Germany) [Pediatr Nephrol] 2022 Sep; Vol. 37 (9), pp. 2185-2207. Date of Electronic Publication: 2022 Jun 17.