title: Abstract book. World congresses. Gastroenterology (OMGE) 8th congress. Digestive endoscopy (OMED) 6th congress. Colo-proctology 3rd congress. São Paulo, Brazil, September 7-12, 1986.
mesh_terms: D000818:Animals; D004066:Digestive System Diseases / Q000175:diagnosis; D004068:Digestive System Physiological Phenomena; D004724:Endoscopy; D006801:Humans