1. Department of Radiation Oncology The University of Texas MD Anderson Cancer Center Houston Texas
2. Baylor College of Medicine Houston Texas
3. Department of Clinical Oncology and Nuclear Medicine, Faculty of Medicine University of Alexandria Alexandria Egypt
4. Department of Thoracic/Head and Neck Medical Oncology The University of Texas MD Anderson Cancer Center Houston Texas
5. Department of Diagnostic Radiology The University of Texas MD Anderson Cancer Center Houston Texas
6. Department of Head and Neck Surgery The University of Texas MD Anderson Cancer Center Houston Texas