RT Journal Article SR Electronic T1 An endoscopic approach to bilio-pancreatic disease JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 1028 OP 1029 DO 10.1136/gut.30.7.1028-a VO 30 IS 7 A1 Carr-Locke, D YR 1989 UL http://gut.bmj.com/content/30/7/1028.2.abstract AB