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Masakazu Takahashi
Research The Institute of Gerontology
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Yasue Takeuchi
The Division of Virology and Rickettsiology, National Institute of Health
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Izumi Yoshikawa
Department of Hygiene and Public Health
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Yasuhiro Shimizu
Department of Microbiology and Immunology, Nippon Medical School
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Kiyoaki Satsuta
Department of Hygiene and Public Health
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Hideo Noriki
Department of Hygiene and Public Health
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Yukio Yamazi
Department of Microbiology and Immunology, Nippon Medical School