1. Division of Nephrology, Kidney Research Centre, Department of Medicine, University of Ottawa, Ottawa, Ontario, Canada2Clinical Epidemiology Program, Ottawa Hospital Research Institute, and Department of Epidemiology and Community Medicine, University of O
2. Department of Medicine, Toronto General Hospital, University of Toronto, Ontario, Canada
3. Clinical Epidemiology Program, Ottawa Hospital Research Institute, and Department of Epidemiology and Community Medicine, University of Ottawa, Ottawa, Ontario, Canada
4. Department of Medicine, Vancouver General Hospital, Vancouver, British Columbia, Canada
5. Department of Medicine, Western University and London Health Sciences Centre, London, Ontario, Canada
6. Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, Canada
7. Department of Medicine, St Michael’s Hospital, Toronto, Ontario, Canada
8. Department of Medicine, University of Alberta, Edmonton, Canada
9. Department of Medicine, McGill University Health Center, Montreal, Quebec, Canada
10. Department of Medicine, University of Manitoba, Winnipeg, Canada
11. Department of Medicine, St Paul’s Hospital, Vancouver, British Columbia, Canada12Center for Health Evaluation and Outcomes Sciences, University of British Columbia, Vancouver, British Columbia, Canada13Tufts–New England Medical Center, Boston, Massachuset