1. Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Centers for Disease Control and Prevention United States Department of Health and Human Services Morgantown West Virginia USA
2. Section of Pulmonary, Critical Care, and Sleep Medicine, Department of Medicine, School of Medicine West Virginia University Morgantown West Virginia USA
3. Division of Critical Care Medicine, Department of Pediatrics McGovern Medical School at the University of Texas Health Science Center at Houston Houston Texas USA
4. Department of Integrative Biology and Pharmacology McGovern Medical School at the University of Texas Health Science Center at Houston Houston Texas USA
5. Division of Pulmonary Medicine, Department of Pediatrics McGovern Medical School at the University of Texas Health Science Center at Houston Houston Texas USA
6. Section of Pediatric Pulmonology, Department of Pediatrics Baylor College of Medicine Houston Texas USA
7. Division of Critical Care, Department of Pediatrics Sidra Medicine Doha Qatar