1. Division of Facial Plastic and Reconstructive Surgery, Department of Otolaryngology–Head & Neck Surgery, Stanford University School of Medicine, Stanford, California
2. Department of Physical and Rehabilitation Medicine, Turku University Hospital and University of Turku, Turku, Finland
3. Division of Otolaryngology–Head and Neck Surgery, Department of Surgery, Université de Montréal, Montréal, Québec, Canada