1. Department of Otolaryngology-Head and Neck Surgery; Georgia Regents University; Augusta Georgia
2. Division of Pediatric Otolaryngology-Head and Neck Surgery; Cincinnati Children's Hospital Medical Center; Cincinnati Ohio
3. Department of Otolaryngology-Head and Neck Surgery; University of Cincinnati College of Medicine; Cincinnati Ohio
4. Department of Pediatric Pulmonary and Sleep Medicine; University of Mississippi Medical Center; Jackson Mississippi
5. Division of Pulmonary and Sleep Medicine; Cincinnati Children's Hospital Medical Center; Cincinnati Ohio
6. Division of Biostatistics and Epidemiology; Cincinnati Children's Hospital Medical Center; Cincinnati Ohio U.S.A.