Effectiveness of diagnostic screening tests in mass screening for COPD using a cooperative regional system in a region with heavy air pollution: a cross-sectional study

Kenji Kotaki; Hisao Ikeda; Takeshi Fukuda; Fumiko Yuki; Kanehiro Hasuo; Yuhei Kawano; Masayuki Kawasaki

doi:10.1136/bmjopen-2016-012923

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Effectiveness of diagnostic screening tests in mass screening for COPD using a cooperative regional system in a region with heavy air pollution: a cross-sectional study

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