1. Faculty of Health Sciences, University of Buea, Buea, Cameroon
2. Etoug-Ebe Baptist Hospital, Yaounde, Cameroon
3. Baptist Institute of Health Sciences, Mbingo, Cameroon
4. Mbingo Baptist Hospital, Mbingo, Cameroon
5. Muea Medicalized Health Center, Muea, Cameroon
6. Clinical Research Education, Networking and Consultancy (CRENC), Douala, Cameroon
7. School of Public Health, Faculty of Medicine, The University of Queensland, Brisbane, Australia