RT Journal Article SR Electronic T1 Treatment of gastric ulcer with oestrogens. JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 46 OP 47 DO 10.1136/gut.9.1.46 VO 9 IS 1 A1 R Doll A1 M J Langman A1 H H Shawdon YR 1968 UL http://gut.bmj.com/content/9/1/46.abstract AB