RT Journal Article SR Electronic T1 Review: azathioprine, infliximab, certolizumab, and adalimumab are effective for maintaining remission in Crohn’s disease JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 115 OP 115 DO 10.1136/ebm.13.4.115 VO 13 IS 4 YR 2008 UL http://ebm.bmj.com/content/13/4/115.abstract AB