1. Department of Population, Family and Reproductive Health, School of Public Health, University of Ghana, P.O. Box LG 25, Legon, Accra, Ghana
2. Planning, Research and Statistics Directorate, National Agency for Food and Drug Administration and Control, PMB 5023, Wuse, Abuja, Nigeria
3. PLAN-Health Project, Management Sciences for Health, P.O. Box 240, Kubwa, Abuja, Nigeria
4. Technical Services Directorate, Society for Family Health, PMB 5116, Wuse, Abuja, Nigeria
5. Society for Family Health, PMB 5116, Wuse, Abuja, Nigeria
6. Malaria Action Program for States, PMB 44, Abuja, Nigeria
7. University of Calabar, PMB 1115, Calabar, Nigeria