Affiliation: | Ohara General Hospital, Fukushima, Japan (H. Fujita);Aichi Medical University School of Medicine, Aichi, Japan (T. Kadosaka);Okinawa Prefectural Institute of Animal Health, Okinawa, Japan (Y. Nitta);National Institute of infectious Diseases, Tokyo (S. Ando, A. Takano, H. Watanabe, H. Kawabata);Gifu University, Gifu, Japan (A. Takano) |