1. Department of Endocrine Neoplasia and Hormonal Disorders, The University of Texas MD Anderson Cancer Center, Houston, Texas.
2. Department of Head and Neck Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas.
3. Department of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, Texas.
4. Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, Texas.
5. Department of Thoracic/Head and Neck Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas.
6. Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas.