1. Department of Otolaryngology; University of Pittsburgh School of Medicine; Pittsburgh Pennsylvania
2. Department of Otolaryngology; Children's Hospital of Pittsburgh of UPMC; Pittsburgh Pennsylvania
3. Division of Pediatric Dentistry; University of Pittsburgh School of Dental Medicine; Pittsburgh Pennsylvania
4. Department of Dentistry; Children's Hospital of Pittsburgh of UPMC; Pittsburgh Pennsylvania
5. Department of Human Genetics; University of Pittsburgh School of Public Health; Pittsburgh Pennsylvania U.S.A.