1. Department of Otolaryngology/Head and Neck Surgery Washington University School of Medicine in St. Louis St. Louis Missouri USA
2. Division of Public Health Science, Department of Surgery Washington University School of Medicine in St. Louis St. Louis Missouri USA
3. VA Health Services Research Center of Innovations in Quality, Effectiveness, and Safety (IQuESt) Michael E. DeBakey VA Medical Center Houston Texas USA
4. Department of Radiation Oncology Duke University School of Medicine Durham North Carolina
5. Department of Head and Neck Surgery and Communication Sciences Duke University School of Medicine Durham North Carolina USA
6. Department of Medicine Baylor College of Medicine Houston Texas USA
7. Dan L. Duncan Comprehensive Cancer Center Baylor College of Medicine Houston Texas USA
8. ENT Section, Operative Care Line Michael E. DeBakey Veterans Affairs Medical Center Houston Texas USA
9. Department of Head and Neck Surgery, Division of Surgery The University of Texas MD Anderson Cancer Center Houston Texas USA
10. Department of Epidemiology, Division of OVP, Cancer Prevention and Population Sciences The University of Texas MD Anderson Cancer Center Houston Texas USA