上海城区60岁以上人群5年内COPD患病率变化及原因分析
龚 益, 时国朝, 万欢英, 等
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
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2011, (2): 216
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DOI: 10.3969/j.issn.1674-8115.2011.02.022
