1. Academic Medical Center, University of Amsterdam; Department of Gastroenterology; Amsterdam Netherlands
2. University Medical Centre; Department of Gastroenterology and Hepatology; Ljubljana Slovenia
3. Robarts Clinical Trials; 100 Dundas Street, Suite 200 London ON Canada N6A 5B6
4. Mayo Clinic; Department of Pathology; Scottsdale AZ USA
5. Robarts Clinical Trials; Cochrane IBD Group; 100 Dundas Street, Suite 200 London ON Canada N6A 5B6
6. University of Western Ontario; Department of Medicine; London ON Canada
7. University of Western Ontario; Department of Epidemiology and Biostatistics; London ON Canada
8. University of California San Diego; Division of Gastroenterology; La Jolla CA USA
9. Academic Medical Center; Meibergdreef 9 - C2-112 Amsterdam Netherlands 1105 AZ
10. Robarts Clinical Trials; Amsterdam Netherlands