Selby, W Re: Biliary tract calculi and primary sclerosing cholangitis. [electronic resource] - The American journal of gastroenterology Feb 1996 - 408 p. digital Publication Type: Comment; Letter ISSN: 0002-9270 Subjects--Topical Terms: Cholangitis, Sclerosing--complicationsCholelithiasis--complicationsHumans