[1] Univ Toronto, Hosp Sick Children, Dept Otolaryngol Head & Neck Surg, 555 Univ Ave, Toronto, ON M5G 1X8, Canada
[2] Univ Toronto, Hosp Sick Children, Archies Cochlear Implant Lab, Toronto, ON, Canada
[3] Univ Toronto, Hosp Sick Children, Dept Commun Disorders, Toronto, ON, Canada
[4] Univ Toronto, Inst Med Sci, Toronto, ON, Canada