1. Department of Health Promotion and Education, Faculty of Public Health, College of MedicineUniversity of Ibadan Ibadan Nigeria
2. Department of Epidemiology and Medical Statistics, Faculty of Public Health, College of MedicineUniversity of Ibadan Ibadan Nigeria
3. Department of PaediatricsUniversity College Hospital Ibadan Nigeria
4. Department of Community MedicineUniversity College Hospital Ibadan Nigeria
5. Murdoch Children's Research InstituteRoyal Children's Hospital Parkville Victoria Australia
6. Institute for Global HealthUniversity College London London UK
7. Eudowood Division of Pediatric Respiratory Sciences, Department of Pediatrics, School of MedicineJohns Hopkins University Baltimore Maryland
8. Save the Children International Abuja Nigeria
9. Save the Children UK London UK
10. Department of Global Public HealthKarolinska Institute Stockholm Sweden