1. Meguro Institute; Masumi-cho Ikeda Osaka 563
2. Department of Parasitology, Institute of Medical Science; The University of Tokyo; Minato-ku, Tokyo 103
3. Division of Virology; Kanagawa Prefectural Public Health Laboratory; Asahi-ku, Yokohama Kanagawa 241
4. Institute of Microbial Chemistry; Shinagawa-ku Tokyo 141
5. Department of Microbiology; Niigata College of Pharmacy; Kamishin'ei-cho, Niigata 950-21
6. 17-16-306, Kamiosaki 1-chome Shinagawa-ku Tokyo 141