RT Journal Article SR Electronic T1 Guidelines for the management of patients with pancreatic cancer periampullary and ampullary carcinomas JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP v1 OP v16 DO 10.1136/gut.2004.057059 VO 54 IS suppl 5 YR 2005 UL http://gut.bmj.com/content/54/suppl_5/v1.abstract AB