RT Journal Article SR Electronic T1 Superior mesenteric blood flow. JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 1583 OP 1584 DO 10.1136/gut.33.11.1583-c VO 33 IS 11 A1 D Parker A1 K Carlisle A1 A E Read YR 1992 UL http://gut.bmj.com/content/33/11/1583.4.abstract AB