1. Saint Louis University School of Medicine St. Louis Missouri
2. Department of Otolaryngology–Head and Neck SurgerySaint Louis University School of Medicine St. Louis Missouri
3. Center for Health Outcomes ResearchSaint Louis University St. Louis Missouri
4. Department of Internal MedicineSaint Louis University School of Medicine St. Louis Missouri
5. Department of Radiation OncologySaint Louis University School of Medicine St. Louis Missouri
6. Department of OtolaryngologyMassachusetts Eye and Ear Infirmary, Harvard Medical School Boston Massachusetts
7. Saint Louis University Cancer Center St. Louis Missouri
8. Department of Epidemiology and BiostatisticsCollege for Public Health and Social Justice, Saint Louis University St. Louis Missouri U.S.A.