1. Harvard Radiation Oncology Program; Boston Massachusetts U.S.A.
2. Department of Radiation Oncology; Boston Medical Center, Boston University School of Medicine; Boston Massachusetts U.S.A.
3. Department of Otolaryngology-Head and Neck Surgery; Boston Medical Center, Boston University School of Medicine; Boston Massachusetts U.S.A.
4. Department of Oral and Maxillofacial Surgery; Boston Medical Center, Boston University Henry M. Goldman School of Dental Medicine; Boston Massachusetts U.S.A.