[World gastroenterology organization: 50th anniversary of its foundation, origin and destination].
Cohen
Henry
H
D005762:Gastroenterology / Q000266:history*; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D007390:International Agencies / Q000266:history*; D012955:Societies, Medical / Q000266:history*