RT Journal Article SR Electronic T1 14C triolein breath test JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 1320 OP 1320 DO 10.1136/gut.28.10.1320 VO 28 IS 10 A1 Butler, Ross YR 1987 UL http://gut.bmj.com/content/28/10/1320.1.abstract AB