RT Journal Article SR Electronic T1 Progress in Medical Genetics Volume IV Genetics of Gastrointestinal Disease JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 695 OP 695 DO 10.1136/gut.22.8.695-a VO 22 IS 8 A1 R B McConnell YR 1981 UL http://gut.bmj.com/content/22/8/695.2.abstract AB