1. Centre for Clinical Epidemiology, Lady Davis Research Institute, Jewish General HospitalMcGill University Montreal Quebec Canada
2. Gerald Bronfman Department of OncologyMcGill University Montreal Quebec Canada
3. Department of Epidemiology, Biostatistics and Occupational HealthMcGill University Montreal Quebec Canada
4. Department of Community Health SciencesManitoba Centre for Health Policy Winnipeg Manitoba Canada
5. Department of Medicine, and Epidemiology and BiostatisticsWestern University London Ontario Canada
6. Institute for Clinical Evaluative Sciences Toronto Ontario Canada
7. Lawson Health Research Institute London Ontario Canada
8. Internal Medicine ServiceCentre Hospitalier Universitaire de Montreal (CHUM) Montreal Quebec Canada
9. The Health Quality Council Saskatoon Saskatchewan Canada
10. Section of Gastroenterology, Division of Internal MedicineUniversity of Manitoba Winnipeg Manitoba Canada
11. Department of Family MedicineUniversity of Calgary Calgary Alberta Canada
12. Department of Anesthesiology, Pharmacology and TherapeuticsUniversity of British Columbia Vancouver British Columbia Canada
13. Department of MedicineMcGill University Montreal Quebec Canada