1. Department of Radiology and Diagnostic Imaging, University of Alberta, Edmonton, Alberta, Canada
2. Department of Surgery, University of Alberta, Edmonton, Alberta, Canada
3. Division of Gastroenterology, Department of Medicine, University of Alberta, Edmonton, Alberta, Canada
4. Canadian Association of Radiologists, Ottawa, Ontario, Canada
5. Department of Medical Imaging, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
6. Department of Medical Imaging, Schulich School of Medicine and Dentistry, Western University, London, Ontario, Canada
7. Department of Diagnostic Radiology, University of Manitoba, Winnipeg, Manitoba, Canada