RT Journal Article SR Electronic T1 Peptic ulcer in India. JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 123 OP 124 DO 10.1136/gut.31.1.123-b VO 31 IS 1 A1 F I Tovey A1 A P Jayaraj YR 1990 UL http://gut.bmj.com/content/31/1/123.3.abstract AB