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Yoko Aoki
Department of Microbiology, Yamagata Prefectural Institute of Public Health
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Akiko Abe
Department of Pediatrics, Shinoda Hospital
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Tatsuya Ikeda
Department of Microbiology, Yamagata Prefectural Institute of Public Health
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Chieko Abiko
Department of Microbiology, Yamagata Prefectural Institute of Public Health
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Katsumi Mizuta
Department of Microbiology, Yamagata Prefectural Institute of Public Health
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Ichiro Yamaguchi
Murayama Public Health Center
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Tadayuki Ahiko
Department of Microbiology, Yamagata Prefectural Institute of Public Health