aDepartment of Medicine, Division of General Internal Medicine, Sunnybrook Health Sciences Center

bDepartment of Medicine, Sunnybrook Health Sciences Centre and University of Toronto, Toronto, Ontario

cCenter for Clinical Epidemiology, Jewish General Hospital/Lady Davis Institute; Division of Internal Medicine, Department of Medicine, McGill University, Montreal, Québec, Canada

Correspondence to Ilia Makedonov, Sunnybrook Health Sciences Centre C410 Department of Medicine 2075 Bayview Ave, Toronto, ON M4N 3M5, Canada. Tel: +416 480 6100; e-mail: [email protected]