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Masahiro Miyoshi
Center for Infectious Diseases Control, Hokkaido Institute of Public Health, Japan
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Rika Komagome
Center for Infectious Diseases Control, Hokkaido Institute of Public Health, Japan
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Hideki Nagano
Center for Infectious Diseases Control, Hokkaido Institute of Public Health, Japan
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Kenichi Takahashi
Center for Infectious Diseases Control, Hokkaido Institute of Public Health, Japan
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Hiroshi Koba
Hokkaido Government Shiribeshi General Subprefectural Bureau, Japan
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Yumiko Kaneko
Hokkaido Government Shiribeshi General Subprefectural Bureau, Japan
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Yasuko Watanabe
Hokkaido Government Shiribeshi General Subprefectural Bureau, Japan
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Fumiaki Suzuki
Hokkaido Government Shiribeshi General Subprefectural Bureau, Japan
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Takashi Hiroshima
Hokkaido Government Shiribeshi General Subprefectural Bureau, Japan
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Ichiro Aida
Hokkaido Government Tokachi General Subprefectural Bureau, Japan
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Sayaka Kitamura
Hokkaido Government Ishikari General Subprefectural Bureau, Japan
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Naosuke Saji
Department of Health and Welfare, Hokkaido Government, Japan
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Ryo Yamaguchi
Department of Health and Welfare, Hokkaido Government, Japan
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Motohiko Okano
Center for Infectious Diseases Control, Hokkaido Institute of Public Health, Japan