[1] Toronto Gen Hosp, Dept Med, Div Endocrinol, Toronto, ON M5G 2C4, Canada
[2] Stanford Univ, Palo Alto, CA 94304 USA
[3] Univ Hlth Network, Dept Otolaryngol Head & Neck Surg, Toronto, ON, Canada
[4] Univ Toronto, Toronto, ON, Canada
[5] McMaster Univ, Dept Clin Epidemiol & Biostat, Hamilton, ON, Canada
[6] St Josephs Healthcare, Ctr Evaluat Med, Hamilton, ON, Canada
[7] Mt Sinai Hosp, Dept Med, Div Endocrinol, Toronto, ON M5G 1X5, Canada
[8] Freeman Ctr Endocrine Oncol, Toronto, ON, Canada
[9] Ontario Canc Inst, Toronto, ON M4X 1K9, Canada
[10] Univ Hlth Networ, Dept Med, Div Endocrinol, Toronto, ON, Canada
[11] Univ Toronto, Deot Knowledge Translat, Toronto, ON, Canada
[12] Univ Calgary, Dept Med, Dept Geriatr, Calgary, AB, Canada
[13] Univ Hlth Network, Dept Radiat Oncol, Toronto, ON, Canada
[14] McMaster Univ, Ctr Hlth Econ & Policy Anal, Hamilton, ON, Canada
[15] Univ Hlth Network, Dept Surg, Toronto, ON, Canada
[16] Univ Hlth Network, Dept Med, Div Endocrinol, Toronto, ON, Canada