1. Solina Centre for International Development and Research, 8 Libreville Street, Abuja 904101, Nigeria
2. Bill & Melinda Gates Foundation, 45 Aguiyi Ironsi St., Abuja 904101, Nigeria
3. Kano State Primary Healthcare Development Agency, Kano-Zaria Rd, Kano 700282, Nigeria
4. Borno State Emergency Routine Immunization Coordination Centre, No 2 off Damboa Road, Maiduguri 600282, Nigeria
5. McKing Consulting Corporation, 2900 Chamblee Tucker Rd. Building 10, Ste. 100, Atlanta, GA 30341, USA