1. Department of Medical Laboratory Sciences, School of Biomedical and Allied Health Sciences, University of Ghana, Accra, Ghana
2. Center for AIDS Research, Kumamoto University, Kumamoto, Japan
3. AIDS Research Center, National Institute of Infectious Diseases, Tokyo, Japan
4. Department of Virology, Noguchi Memorial Institute for Medical Research, University of Ghana, Accra, Ghana
5. Department of Infection and Immunology, Clinical Research Center, National Hospital Organization, Nagoya Medical Center, Nagoya, Japan
6. Department of AIDS Research, Nagoya University Graduate School of Medicine, Nagoya, Japan
7. Department of Medicine, Tamale Teaching Hospital, Ghana Health Service, Tamale, Ghana
8. Department of Molecular Virology, Graduate School of Medicine, Tokyo Medical and Dental University, Tokyo, Japan