Incidence of biliary tract operations in a town population; analysis of a 15-year series.
D001659:Biliary Tract; D001662:Biliary Tract Surgical Procedures; D001699:Biometry; D002763:Cholecystectomy / Q000706:statistics & numerical data*; D004032:Diet; D006801:Humans; D015994:Incidence; D012931:Social Environment
CHOLECYSTECTOMY/statistics; DIETS/effects