RT Journal Article SR Electronic T1 Vascular disease of the gut JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 1520 OP 1520 DO 10.1136/gut.27.12.1520 VO 27 IS 12 A1 Shields, R YR 1986 UL http://gut.bmj.com/content/27/12/1520.1.abstract AB