RT Journal Article SR Electronic T1 Cardiac response to exercise in cirrhosis JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 755 OP 755 DO 10.1136/gut.51.5.755-a VO 51 IS 5 A1 R H Wachsberg YR 2002 UL http://gut.bmj.com/content/51/5/755.2.abstract AB