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Tatsuya Ikeda
Department of Microbiology, Yamagata Prefectural Institute of Public Health, Japan
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Yoko Aoki
Department of Microbiology, Yamagata Prefectural Institute of Public Health, Japan
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Kenichi Komabayashi
Department of Microbiology, Yamagata Prefectural Institute of Public Health, Japan
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Tsutomu Itagaki
Yamanobe Pediatric Clinic, Japan
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Katsumi Mizuta
Department of Microbiology, Yamagata Prefectural Institute of Public Health, Japan