[1] Univ Toronto, Temerty Fac Med, Toronto, ON M5S 1A8, Canada
[2] Univ Hlth Network, Dept Med, Toronto, ON M5G 2C4, Canada
[3] Louisiana State Univ, Sch Kinesiol, Baton Rouge, LA 70802 USA
[4] Hosp Mar, Dept Geriatr, Barcelona 08003, Spain
[5] Univ Hlth Network, Dept Nursing, Toronto, ON M5G 2C4, Canada
[6] Univ Hlth Network, Dept Surg Oncol, Div Urol, Toronto, ON M5G 2C4, Canada
[7] Univ Toronto, Dept Radiat Oncol, Toronto, ON M5T 1P5, Canada
[8] Princess Margaret Canc Ctr, Radiat Med Program, Toronto, ON M5G 2M9, Canada
[9] Princess Margaret Canc Ctr, Div Med Oncol & Hematol, Toronto, ON M5G 2M9, Canada
[10] Univ Toronto, Dept Med, Toronto, ON M5G 2C4, Canada
[11] Univ Toronto, Inst Hlth Policy Management & Evaluat, Toronto, ON M5T 3M6, Canada