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Shinji Teramoto
Hitachinaka Education and Research Center, The University of Tsukuba, Japan
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Norihito Hida
Hitachi Ltd., Hitachinaka General Hospital, Japan
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Hiroaki Ishikawa
Hitachi Ltd., Hitachinaka General Hospital, Japan
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Nobuyuki Hizawa
Department of Respiratory Medicine, Division of Clinical Medicine, Faculty of Medicine, University of Tsukuba, Japan