1. Department of Pediatrics, Section of Emergency Medicine, Baylor College of Medicine, Houston, Texas;
2. Institute for Global Health, University College London, London, United Kingdom;
3. Department of Global Public Health, Karolinksa Institutet, Stockholm, Sweden;
4. Parent and Child Health Initiative, Lilongwe, Malawi;
5. Republic of Malawi Ministry of Health, Lilongwe, Malawi;
6. Kenya Medical Research Institute-Wellcome Trust, Nairobi, Kenya;
7. Division of Pulmonology, Department of Pediatrics, Johns Hopkins School of Medicine, Baltimore, Maryland;
8. Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland