| Affiliation: | 1. Department of Anesthesia, University of Toronto, Toronto, Ontario, Canada;2. Department of Anesthesia and Pain Management, Toronto General Hospital, 200 Elizabeth Street, 3EN-421, Toronto, Ontario M5G 2C4, Canada;1. Anesthesiology and Critical Care Medicine, Johns Hopkins Medicine, 601 North Caroline Street, Baltimore, MD 21287-0712, USA;2. Otolaryngology, Head and Neck Surgery, Johns Hopkins Medicine, 601 North Caroline Street, Baltimore, MD 21287-0712, USA;1. Temple University Hospital, Philadelphia, PA 19140, USA;2. Department of Otolaryngology-Head & Neck Surgery, Voice, Airway & Swallowing Center, Temple University School of Medicine, 3440 North Broad Street Kresge West 312, Philadelphia, PA 19140, USA |
