1. Dartmouth Medical School; Dartmouth Institute; Hanover New Hampshire USA
2. Annals of Internal Medicine
3. Oregon Health & Science University; Portland VA Medical Center and Department of Medicine; Portland Oregon USA
4. Medical Decision Making
5. Ottawa Hospital Research Institute; Clinical Epidemiology Program; Ottawa Ontario Canada
6. Canadian Cochrane Center
7. Trials
8. Johns Hopkins Bloomberg School of Public Health; Department of Epidemiology; Baltimore Maryland USA
9. US Cochrane Center
10. Cochrane; London UK
11. University of Maastricht; Department of General Practice; Maastricht The Netherlands
12. Journal of Clinical Epidemiology
13. University of Ottawa; Departments of Medicine, and Epidemiology and Community Medicine; Ottawa Ontario Canada