Bile duct stricture
Ostroff JW, LaBerge JM. Endoscopic and radiologic treatment of biliary disease. In: Feldman M, Friedman LS, Sleisenger MH, eds. Sleisenger & Fordtran’s Gastrointestinal and Liver Disease. 8th ed. Philadelphia, Pa: Saunders Elsevier; 2006:chap 67.