1. Department of Head and Neck/Plastic and Reconstructive SurgeryRoswell Park Cancer InstituteBuffalo New York U.S.A.
2. Department of Radiation MedicineRoswell Park Cancer InstituteBuffalo New York U.S.A.
3. Department of BiostatisticsRoswell Park Cancer InstituteBuffalo New York U.S.A.
4. Department of Radiation Oncology and Department of Cell and Molecular PharmacologyMedical University of South CarolinaCharleston South Carolina U.S.A.