1. Laboratory of Primate Model, Experimental Research Center for Infectious Diseases, Institute for Virus Research, Kyoto University, Kyoto 606-8507, Japan.
2. Divisions of Human Biology and Basic Sciences, Fred Hutchinson Cancer Research Center, Seattle, Washington.
3. Department of Biological Sciences, Graduate School of Science, University of Tokyo, Tokyo, Japan.
4. Christian Medical College Hospital, Tamil Nadu, India.
5. Laboratory of Viral Pathogenesis, Institute for Virus Research, Kyoto University, Kyoto, Japan.
6. Department of Molecular Virology, School of Medicine, Tokyo Medical and Dental University, Tokyo, Japan.