RT Journal Article SR Electronic T1 COX-2 inhibitors and the gastrointestinal tract JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 451 OP 451 DO 10.1136/gut.48.4.451 VO 48 IS 4 A1 I Bjarnason A1 K D Rainsford YR 2001 UL http://gut.bmj.com/content/48/4/451.abstract AB