1. Division of Medical Oncology, Mayo Clinic, Rochester, Minnesota.
2. Division of Biomedical Statistics and Informatics, Mayo Clinic, Rochester, Minnesota.
3. Department of Radiation Oncology and Mayo Clinic, Rochester, Minnesota.
4. Division of Head and Neck Surgery, Mayo Clinic, Rochester, Minnesota.
5. Department of Laboratory and Anatomical Pathology, Mayo Clinic, Rochester, Minnesota.
6. Division of Endocrinology, Mayo Clinic, Rochester, Minnesota.