%0 Journal Article %T A Twenty-year Experience With Endoscopic Therapy for Symptomatic Primary Sclerosing Cholangitis %A Kozarek, Richard A. %J Journal of Clinical Gastroenterology %V 42 %N 9 %P 1032-1039 %@ 0192-0790 %D 2008-10-01 %~ DeepDyve