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Keishi Oda
Department of Respiratory Medicine, University of Occupational and Environmental Health, Japan
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Takako Kawaguchi
Department of Respiratory Medicine, University of Occupational and Environmental Health, Japan
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Minoru Satoh
Department of Clinical Nursing, University of Occupational and Environmental Health, Japan
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Kazuhiro Yatera
Department of Respiratory Medicine, University of Occupational and Environmental Health, Japan