The Value of Handheld COPD-6 Spirometry for Early COPD Detection in High Risk Elderly Population in Community

XU Yunli, SHAO Hongtao, REN Xiaohong, LIU Lilan
Chinese General Practice . 2022, (02): 206 -211 .  DOI: 10.12114/j.issn.1007-9572.2021.01.315

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