1. Division of Head and Neck Oncology, Department of Otolaryngology–Head and Neck Surgery James Cancer Center and Solove Research Institute, Ohio State University Columbus Ohio
2. Department of Otolaryngology–Head and Neck Surgery Sunnybrook Health Sciences Centre University of Toronto Toronto Ontario Canada
3. Department of Radiation Oncology Sunnybrook Health Sciences Centre and Odette Cancer Centre University of Toronto Toronto Ontario Canada
4. Institute of Health Policy, Management, and Evaluation University of Toronto Toronto Ontario Canada