title: Operative and therapeutic techniques.
mesh_terms: D000328:Adult; D014670:Ampulla of Vater; D001660:Biliary Tract Diseases / Q000628:therapy; D002648:Child; D002758:Cholangiography; D004724:Endoscopy / Q000009:adverse effects / Q000379:methods; D004932:Esophageal and Gastric Varices / Q000628:therapy; D005336:Fiber Optic Technology; D005547:Foreign Bodies / Q000628:therapy; D042882:Gallstones / Q000628:therapy; D005767:Gastrointestinal Diseases / Q000628:therapy*; D005770:Gastrointestinal Neoplasms / Q000145:classification / Q000628:therapy; D006801:Humans; D011127:Polyps / Q000628:therapy; D011379:Prognosis