1. Department of Anthropology, Faculty of Science; The University of Tokyo; Bunkyo-ku Tokyo 113
2. Department of Cytogenetics; Medical Research Institute, Tokyo Medical and Dental University; Bunkyo-ku Tokyo 113
3. Department of Legal Medicine, School of Medicine; Mie University; Tsu Mie 514
4. Primate Research Institute; Kyoto University; Inuyama Aichi 484
5. Department of Animal Pathology, Institute of Medical Science; The University of Tokyo; Minato-ku Tokyo 108
6. Institute for Virus Research; Kyoto University; Sakyo-ku, Kyoto Kyoto 606