1. Saint Louis University Cancer Center; Saint Louis Missouri
2. Department of Otolaryngology-Head and Neck Surgery; Saint Louis University, School of Medicine; Saint Louis Missouri
3. Department of Epidemiology; College for Public Health and Social Justice, Saint Louis University; Saint Louis Missouri
4. Saint Louis University, School of Medicine; Saint Louis Missouri
5. Saint Louis University Center for Outcomes Research; Saint Louis Missouri
6. Harvard Medical School, Department of Otolaryngology; Massachusetts Eye and Ear Infirmary; Boston Massachusetts