RT Journal Article SR Electronic T1 Techniques in the Management of Gallstone Disease JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 342 OP 343 DO 10.1136/gut.39.2.342-c VO 39 IS 2 A1 R Hermon Dowling YR 1996 UL http://gut.bmj.com/content/39/2/342.4.abstract AB