RT Journal Article SR Electronic T1 Peptic ulceration and antiulcer drugs JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP S47 OP S49 DO 10.1136/gut.33.1_Suppl.S47 VO 33 IS 1 Suppl YR 1992 UL http://gut.bmj.com/content/33/1_Suppl/S47.abstract AB