Autor:
Lewin S; Department of Public Health and Policy, London School of Hygiene and Tropical Medicine, London WC1E 7HT. simon.lewin@nokc.no,
Glenton C,
Oxman AD
Publikováno v:
BMJ (Clinical research ed.) [BMJ] 2009 Sep 10; Vol. 339, pp. b3496. Date of Electronic Publication: 2009 Sep 10.