RT Journal Article SR Electronic T1 Oesophageal carcinoma in Sri Lanka. JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 242 OP 242 DO 10.1136/gut.31.2.242-a VO 31 IS 2 A1 Kantha, S S YR 1990 UL http://gut.bmj.com/content/31/2/242.2.abstract AB