1. Medical Education Department, Phoenix Children's Hospital, Phoenix, AZ, USA;
2. Statistics Department, Phoenix Children's Hospital, Phoenix, AZ, USA;
3. Pediatric Hospitalist, Phoenix Children's Hospital, Phoenix, AZ, USA;
4. Allergy, Asthma and Clinical Immunology, Mayo Clinic Phoenix, Scottsdale, AZ, USA;
5. Department of Pediatric Emergency Medicine, Phoenix Children's Hospital, Phoenix, AZ, USA;
6. Department of Pediatric Intensive Care Unit, Phoenix Children's Hospital, Phoenix, AZ, USA;
7. Pediatric Pulmonology, Phoenix Children's Hospital, Phoenix, AZ, USA