1. Division of General Internal Medicine, Department of Medicine (M.K.K., J.V.T.), University of Toronto, Toronto, Ontario, Canada.
2. Institute of Health Policy, Management and Evaluation (M.K.K., P.C.A., J.V.T.), University of Toronto, Toronto, Ontario, Canada.
3. ICES, Toronto, Ontario, Canada (M.K.K., P.C.A., R.H., A.C., A.M.K., D.M., J.V.T.).
4. Royal College of Surgeons in Ireland School of Medicine, Dublin, Ireland (G.J.).
5. Department of Medicine, Queen’s University, Kingston, Ontario, Canada (A.Y.J.).
6. Kingston Health Sciences Centre, Kingston, Ontario, Canada (C.M.).
7. Ottawa Hospital Research Institute, Ottawa, Ontario, Canada (D.M.).
8. Division of Neurology, Department of Medicine (F.L.S., R.H.S.), University of Toronto, Toronto, Ontario, Canada.