1. Division of Otolaryngology-Head and Neck Surgery; Intermountain Healthcare Inc; Salt Lake City Utah U.S.A
2. Intermountain Healthcare, Surgical Services Clinical Program, Intermountain Medical Center; Murray Utah U.S.A
3. Division of Pediatric Inpatient Medicine; Department of Pediatrics; University of Utah School of Medicine, Intermountain Healthcare Inc; Salt Lake City Utah U.S.A
4. Primary Children's Hospital; Intermountain Healthcare Inc; Salt Lake City Utah U.S.A
5. Institute for Health Care Delivery Research, Intermountain Healthcare Inc; Salt Lake City Utah U.S.A