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Cooperative Crohn's disease study in Sweden—practical problems in planning and conducting multicenter trials
Bergelin, Ingemar, Rosén, Anders, Ursing, BoVolume:
1
Language:
english
Journal:
Controlled Clinical Trials
DOI:
10.1016/0197-2456(80)90060-4
Date:
September, 1980
File:
PDF, 69 KB
english, 1980