1. Department of Pediatrics, Driscoll Children’s Hospital, Corpus Christi, TX, USA;
2. Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA;
3. School of Medicine, Texas Tech University Health Sciences Center, Lubbock, TX, USA;
4. Department of Emergency Medicine, National Taiwan University Hospital, Taipei, Taiwan;
5. Department of Critical Care Medicine, Driscoll Children’s Hospital, Corpus Christi, TX, USA;
6. Department of Pulmonary Medicine, Driscoll Children’s Hospital, Corpus Christi, TX, USA;
7. Department of Pediatric Emergency Medicine, Johns Hopkins School of Medicine, Baltimore, MD, USA