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Hidetaka Tsuji
Division of Microbiology, Hyogo Prefectural Institute of Public Health, Japan
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Kunio Shimada
Division of Microbiology, Hyogo Prefectural Institute of Public Health, Japan
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Kokichi Hamada
Division of Microbiology, Hyogo Prefectural Institute of Public Health, Japan
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Hiroshi Nakajima
Department of Microbiology, Okayama Prefectural Institute for Environmental Science and Public Health, Japan