1. Department of Otolaryngology-Head and Neck Surgery; Johns Hopkins University School of Medicine; Baltimore Maryland
2. School of Accountancy; Fogelman College of Business and Economics, University of Memphis; Memphis Tennessee
3. Department of Radiology; Johns Hopkins University School of Medicine; Baltimore Maryland
4. Division of Respiratory Care Services; Johns Hopkins University School of Medicine; Baltimore Maryland
5. Department of Otolaryngology-Head and Neck Surgery; Division of Pediatric Otolaryngology, Johns Hopkins University School of Medicine, Armstrong Institute for Patient Safety and Quality; Baltimore Maryland
6. Department of Pediatric Otolaryngology; Cincinnati Children's Hospital Medical Center and the University of Cincinnati; Cincinnati Ohio U.S.A.