RT Journal Article SR Electronic T1 Frontiers of Gastrointestinal Research Volume 6 The Stomach JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 168 OP 168 DO 10.1136/gut.22.2.168-a VO 22 IS 2 A1 Baron, J H YR 1981 UL http://gut.bmj.com/content/22/2/168.2.abstract AB