1. Mount Sinai Centre for Inflammatory Bowel Disease, Toronto, Ontario, Canada
2. Department of Medicine, University of Toronto, Toronto, Ontario, Canada
3. Institute for Clinical Evaluative Sciences, Toronto, Ontario, Canada
4. Institute of Health Policy, Management and Evaluation, Toronto, Ontario, Canada
5. Lakeridge Health Corporation, Oshawa, Ontario, Canada
6. Joint Department of Medical Imaging, University of Toronto, Toronto, Ontario, Canada