Mutation analysis of 2009 pandemic influenza A(H1N1) viruses collected in Japan during the peak phase of the pandemic. oleh Jean-Étienne Morlighem, Shintaro Aoki, Mami Kishima, Mitsue Hanami, Chihiro Ogawa, Amadu Jalloh, Yukari Takahashi, Yuki Kawai, Satomi Saga, Eiji Hayashi, Toshiaki Ban, Shinyu Izumi, Akira Wada, Masayuki Mano, Megumu Fukunaga, Yoshiyuki Kijima, Masashi Shiomi, Kaoru Inoue, Takeshi Hata, Yukihiro Koretsune, Koichiro Kudo, Yuji Himeno, Aizan Hirai, Kazuo Takahashi, Yuko Sakai-Tagawa, Kiyoko Iwatsuki-Horimoto, Yoshihiro Kawaoka, Yoshihide Hayashizaki, Toshihisa Ishikawa