RT Journal Article SR Electronic T1 Collagenous colitis in adult Sri Lankans: experience from the Indian subcontinent JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 436 OP 436 DO 10.1136/gut.2005.084681 VO 55 IS 3 A1 Satarasinghe, R L A1 Fernando, H R R A1 Jayamaha, D H A1 Samarasinghe, I A1 De Silva, A P YR 2006 UL http://gut.bmj.com/content/55/3/436.abstract AB