1. Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Washington, Seattle, WA, USA
2. Department of Biostatistics, University of Washington, Seattle, WA, USA
3. Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, University of Washington, Seattle, WA, USA
4. Mahidol-Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
5. Department of Clinical Tropical Medicine, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
6. Department of Internal Medicine, Sunpasitthiprasong Hospital, Ubon Ratchathani, Thailand
7. Department of Microbiology and Immunology, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
8. Department of Tropical Hygiene, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
9. International Respiratory and Severe Illness Center, University of Washington, Seattle, WA, USA