Validation of international algorithms to identify adults with inflammatory bowel disease in health administrative data from Ontario, Canada
Benchimol EI, Guttmann A, Mack DR, Nguyen GC, Marshall JK, Gregor JC, Wong J, Forster AJ, Manuel DG. J Clin Epidemiol. 2014; 67(8):887-96. Epub 2014 Apr 26.