RT Journal Article SR Electronic T1 Peptic ulcer in India and Bangladesh. JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 329 OP 347 DO 10.1136/gut.20.4.329 VO 20 IS 4 A1 F Tovey YR 1979 UL http://gut.bmj.com/content/20/4/329.abstract AB