1. Department of Medical Laboratory Science, Faculty of Allied Medical Sciences, University of Calabar, Calabar, Nigeria
2. Department of Medical Laboratory Science, Faculty of Allied Health Sciences, Ahmadu Bello University, Zaria, Nigeria
3. Department of Medical Laboratory Science, Ebonyi State University, Abakaliki, Nigeria
4. Nigeria Field Epidemiology and Laboratory Training Programme, African Field Epidemiology Network, Abuja, Nigeria
5. Antiretroviral Therapy Laboratory, Ahmadu Bello University Teaching Hospital, Zaria, Nigeria
6. Solina International Center for Research and Development, Abuja, Nigeria
7. Department of Medical Laboratory Services, University of Abuja Teaching Hospital, Abuja, Nigeria
8. Department of Community Medicine, University of Abuja, Abuja, Nigeria
9. WHO National Polio Reference Laboratory, University of Maiduguri Teaching Hospital, Maiduguri, Nigeria