1. Division of Endocrinology (L.B.), Department of Medicine, Toronto General Hospital, Toronto, ON M5G 2C4, Canada;
2. Thyroid Cancer Canada (R.B.), Toronto, ON M5N 3A8, Canada;
3. Department of Psychosocial Oncology (G.R.), Princess Margaret Hospital, Toronto, ON M5G 2M9, Canada;
4. Department of Clinical Epidemiology and Biostatistics (L.T.), St. Joseph's Healthcare and McMaster University, Hamilton, ON L8N 4A6, Canada;
5. Division of Endocrinology (S.E., A.M.S.), University Health Network and University of Toronto, Toronto, ON M5G 2N2, Canada