Shuji Ando¹ , Masahiro Kurosawa¹, Akiko Sakata, Hiromi Fujita, Katsurou Sakai, Masao Sekine, Masanori Katsumi, Wakana Saitou, Yasuhiro Yano, Nobuhiro Takada, Ai Takano, Hiroki Kawabata, Nozomu Hanaoka, Haruo Watanabe, Ichiro Kurane, and Toshio Kishimoto

Author affiliations: National Institute of Infectious Diseases, Tokyo, Japan (S. Ando, A. Sakata, A. Takano, H. Kawabata, N. Hanaoka, H. Watanabe, I. Kurane, T. Kishimoto); Sendai Medical Center, Sendai, Japan (M. Kurosawa, W. Saitou); Ohara General Hospital, Fukushima, Japan (H. Fujita); Sendai City Institute of Public Health, Sendai (K. Sakai, M. Sekine, M. Katsumi); Fukui University, Fukui, Japan (Y. Yano, N. Takada); Gifu University, Gifu, Japan (A. Takano, H. Kawabata, H. Watanabe); 1These authors contributed equally to this article.