1. Department of Otolaryngology–Head and Neck SurgeryHarvard Medical School Boston Massachusetts
2. Department of Otolaryngology–Head and Neck SurgeryDivision of Facial Plastic and Reconstructive Surgery, Massachusetts Eye and Ear Boston Massachusetts
3. Center for Surgery and Public HealthBrigham and Women's Hospital, Harvard Medical School Boston Massachusetts U.S.A.
4. Department of SurgerySt. Elizabeth's Medical Center, Tufts University School of Medicine Boston Massachusetts U.S.A.