1. Division of Pediatric Otolaryngology, Department of Otolaryn-gology–Head and Neck Surgery (Dr Rudnick), Children's Hospital and Regional Medical Center, The University of Washington School of Medicine; and the Division of Pediatric Otolaryngology, Department of Oto-laryngology–Head and Neck Surgery (Dr Mitchell), Cardinal Glennon Children's Medical Center, St Louis University School of Medicine. Seattle, WA; and St Louis, MO