1. Department of Radiation Oncology, Winship Cancer Institute Emory University School of Medicine Atlanta Georgia USA
2. Biostatistics Shared Resource, Winship Cancer Institute Emory University Atlanta Georgia USA
3. Department of Radiation Oncology City of Hope Comprehensive Cancer Center Duarte California USA
4. Department of Radiation Oncology University of Colorado school of Medicine Aurora Colorado USA
5. Department of Medical Oncology, Winship Cancer Institute Emory University School of Medicine Atlanta Georgia USA
6. Department of Otolaryngology Emory University School of Medicine Atlanta Georgia USA
7. Department of Radiology Emory University School of Medicine Atlanta Georgia USA
8. Knox County Health Clinic Rockland Maine United States