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Autor:
M P Achiam, M Nilsson, O Åkesson, J Johansson, D Edholm, M Lindblad, E Szabo, M Sundbom, F Lindberg, M Bau Mortensen, E Kjus Aahlin, T Mala, H Johannessen, G Johnsen, J Kauppila, J Hedberg
Publikováno v:
Diseases of the Esophagus. 35
Background and aim The Nordic countries have similar health care systems and registries simplifying epidemiological research. Differences in treatment traditions can, however, hamper the possibility to assess results and to harmonize control arms in