1. Volume 124, Issue 4, Pages 889-893 (April 2003)
Ursodeoxycholic acid as a chemopreventive agent in patients with ulcerative colitis and primary sclerosing cholangitis 
Darrell S. Pardi, Edward V. Loftus, Walter K. Kremers, Jill Keach, Keith D. Lindor 
Gastroenterology 
Volume 124, Issue 4, Pages (April 2003)
DOI: /gast
Copyright © 2003 American Gastroenterological Association Terms and Conditions

2. Fig. 1
Kaplan-Meier estimates of proportion of patients free of dysplasia or cancer according to initial treatment assignment.
Gastroenterology  , DOI: ( /gast )
Copyright © 2003 American Gastroenterological Association Terms and Conditions