1. All authors are with University of Toronto, Ontario, Canada. Neil Arnstead, MD, is a Resident, Department of Otolaryngology–Head and Neck Surgery; Paolo Campisi, MD, MSc, FRCSC, is Professor and Director for Postgraduate Education, Department of Otolaryngology–Head and Neck Surgery, and Staff Otolaryngologist, Hospital for Sick Children, Toronto, Ontario, Canada; Susan Glover Takahashi, PhD, MA(E