1. Department of Otolaryngology–Head and Neck Surgery Baylor College of Medicine Houston Texas U.S.A.
2. Department of Quality Management Baylor St. Luke's Medical Center Houston Texas U.S.A.
3. Division of Pulmonary and Critical Care Medicine Baylor College of Medicine Houston Texas U.S.A.
4. Outcomes and Impact Service Texas Children's Hospital Houston Texas U.S.A.