1. Department of Population Science and Policy; Southern Illinois University School of Medicine; Springfield Illinois
2. Department of Internal Medicine; Southern Illinois University School of Medicine; Springfield Illinois
3. Saint Louis University Center for Health Outcomes Research; St. Louis Missouri
4. Department of Epidemiology and Biostatistics; Saint Louis University College for Public Health and Social Justice; St. Louis Missouri
5. Saint Louis University Cancer Center; St. Louis Missouri
6. Department of Otolaryngology-Head and Neck Surgery; Saint Louis University School of Medicine; St. Louis Missouri
7. Department of Otolaryngology-Head and Neck Surgery; Washington University School of Medicine; St. Louis Missouri