RT Journal Article SR Electronic T1 Hypoxia and Ischaemia JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 160 OP 160 DO 10.1136/gut.19.2.160 VO 19 IS 2 YR 1978 UL http://gut.bmj.com/content/19/2/160.1.abstract AB