Gastrointestinal biliary conditions.
D001659:Biliary Tract / Q000601:surgery*; D001660:Biliary Tract Diseases; D001662:Biliary Tract Surgical Procedures; D013505:Digestive System Surgical Procedures; D005762:Gastroenterology; D005767:Gastrointestinal Diseases; D041981:Gastrointestinal Tract / Q000601:surgery*
BILIARY TRACT/diseases; BILIARY TRACT/surgery; GASTROENTEROLOGY; GASTROINTESTINAL SYSTEM/surgery