1. Division of Surgery, Department of Head and Neck Surgery, The University of Texas MD Anderson Cancer Center, Houston
2. Division of Internal Medicine, Department of Endocrine Neoplasia and Hormonal Disorders, The University of Texas MD Anderson Cancer Center, Houston
3. Division of Radiation Oncology, Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston
4. Division of Cancer Prevention and Population Studies, Department of Epidemiology, The University of Texas MD Anderson Cancer Center, Houston