[1] Univ Toronto, Dept Otolaryngol Head & Neck Surg, Toronto, ON, Canada
[2] Univ Toronto, Inst Hlth Policy Management & Evaluat, Dalla Lana Sch Publ Hlth, Toronto, ON, Canada
[3] ICES, Toronto, ON, Canada
[4] Sunnybrook Res Inst, Sunnybrook Hlth Sci Ctr, Evaluat Clin Sci, Toronto, ON, Canada
[5] Dalhousie Univ, Div Otolaryngol Head & Neck Surg, Halifax, NS, Canada
[6] Univ Hlth Network, Princess Margaret Canc Ctr, Dept Surg Oncol, Toronto, ON, Canada
[7] Univ Toronto, Dept Psychiat, Toronto, ON, Canada
[8] Odette Canc Ctr, Sunnybrook Hlth Sci Ctr, Div Surg Oncol, Toronto, ON, Canada
[9] Univ Toronto, Dept Surg, Toronto, ON, Canada
[10] Sunnybrook Hlth Sci Ctr, 2075 Bayview Ave, Room T2 047, Toronto, ON M4N3M5, Canada