RT Journal Article SR Electronic T1 Interventional radiology of the gallbladder JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 1202 OP 1202 DO 10.1136/gut.32.10.1202-a VO 32 IS 10 A1 Lees, W R YR 1991 UL http://gut.bmj.com/content/32/10/1202.2.abstract AB