1. Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, Cleveland Clinic; Cleveland Ohio
2. Southeast Radiation Oncology Group; Charlotte North Carolina
3. Department of Radiation Oncology; Taussig Cancer Institute, Cleveland Clinic; Cleveland Ohio
4. Department of Hematology and Medical Oncology; Taussig Cancer Institute, Cleveland Clinic; Cleveland Ohio
5. Section of Head and Neck Surgery and Oncology, Head and Neck Institute, Cleveland Clinic; Cleveland Ohio