1. Department of Otolaryngology at the University of Washington, Seattle, Washington.
2. Department of Pediatrics at the University of Washington, Seattle, Washington.
3. Children's Hospital and Regional Medical Center in the Department of Otolaryngology at the University of Washington, Seattle, Washington.
4. Children's Craniofacial Center at Children's Hospital and Regional Medical Center and Department of Pediatrics at the University of Washington, Seattle, Washington.