1. Experimental Retrovirology Section, HIV and AIDS Malignancy Branch, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
2. Departments of Infectious Diseases and Hematology, Kumamoto University Graduate School of Medical Sciences, Kumamoto, Japan
3. Department of Medical Technology, Kumamoto Health Science University, Kumamoto, Japan
4. Research Institute and Center for Clinical Sciences, National Center for Global Health and Medicine, Tokyo, Japan
5. Department of Pharmacology, GSL Medical College and General Hospital, Rajahmundry, Andhra Pradesh, India
6. Departments of Chemistry and Medicinal Chemistry, Purdue University, West Lafayette, Indiana, USA
7. Department of Structural Biology, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan