1. Department of Global Public HealthKarolinska InstitutetStockholm Sweden
2. Institute for Global HealthUniversity College LondonLondon UK
3. Department of Epidemiology and Medical StatisticsFaculty of Public HealthCollege of MedicineUniversity of IbadanIbadan Nigeria
4. Save the Children UKLondon UK
5. Save the Children InternationalAbuja Nigeria
6. Department of Community MedicineUniversity College HospitalIbadan Nigeria
7. Department of Health Promotion and EducationFaculty of Public HealthCollege of MedicineUniversity of IbadanIbadan Nigeria
8. International Child Health, Murdoch Children's Research InstituteRoyal Children's HospitalParkville Victoria Australia
9. Eudowood Division of Pediatric Respiratory SciencesDepartment of PediatricsSchool of MedicineJohns Hopkins UniversityBaltimore Maryland
10. Department of PaediatricsUniversity of Ibadan and University College HospitalIbadan Nigeria