1. Chantal BIYA International Reference Centre for Research on HIV/AIDS Prevention and Management, Yaoundé, Cameroon.
2. University of Rome Tor Vergata, Rome, Italy.
3. Faculty of Medicine and Biomedical Sciences, University of Yaoundé I, Yaoundé, Cameroon.
4. National HIV Drug Resistance Prevention and Surveillance Working Group, Ministry of Public Health, Yaoundé, Cameroon.
5. HIV Care and Treatment Centre, Yaoundé Central Hospital, Yaoundé, Cameroon.
6. National Institute for Infectious Diseases “Lazzaro Spallanzani,” Rome, Italy.