Institution: | University of Tokyo, Tokyo, Japan (S. Watanabe, N. Ueda, K. Iha, S. Taniguchi, H. Fujii, S. Tsuda, M. Endoh, K. Kato, S. Kyuwa, Y. Yoshikawa, H. Akashi);University of the Philippines Los Baños, Laguna, the Philippines (J.S. Masangkay, P. Alviola);National Institute of Infectious Diseases, Tokyo (N. Nagata, S. Morikawa, T. Mizutani, S. Fukushi, T. Omatsu);Nihon University, Kanagawa, Japan (Y. Tohya) |