慢性阻塞性肺疾病患者症状群及其亚组识别的研究
徐艳松, 刘庆华, 邱筱婷
Study on the identification of chronic obstructive pulmonary disease symptom clusters and their subgroups
XU Yan-song, LIU Qing-hua, QIU Xiao-ting
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