1. Division of Otolaryngology Head and Neck Surgery; Penn State Milton S. Hershey Medical Center; Hershey Pennsylvania U.S.A.
2. Division of Thyroid and Parathyroid Surgery; Department of Otolaryngology, Massachusetts Eye and Ear Infirmary, Harvard Medical School; Boston Massachusetts U.S.A.
3. Division of Head and Neck Surgery; Massachusetts Eye and Ear Infirmary, Harvard Medical School; Boston Massachusetts U.S.A.
4. Medicus Research; Agoura Hills California U.S.A.
5. Hallmark Health Medical Associates; Melrose-Wakefield Hospital; Melrose Massachusetts U.S.A.
6. Division of Surgical Oncology; Department of Surgery, Massachusetts General Hospital, Harvard Medical School; Boston Massachusetts U.S.A.