title: Clinical research in gastrointestinal surgery and in gastroenterology: where are the obstacles?
authors.forename: S
authors.initials: S
authors.lastname: Schreiber
mesh_terms: D013505:Digestive System Surgical Procedures; D005762:Gastroenterology; D006801:Humans; D010506:Periodicals as Topic; D012108:Research Personnel / Q000193:education