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中文
Changes in prevalences of COPD within 5 years in people aged no less than 60 years in Shanghai urban area
GONG Yi, SHI Guo-chao, WAN Huan-ying, et al
. 2011, (
2
): 216 . DOI: 10.3969/j.issn.1674-8115.2011.02.022