RT Journal Article SR Electronic T1 Gall bladder and bowel: the links multiply JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 166 OP 167 DO 10.1136/gut.45.2.166 VO 45 IS 2 A1 K W HEATON YR 1999 UL http://gut.bmj.com/content/45/2/166.abstract AB