医学临床研究
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JOURNAL OF CLINICAL RESEARCH  2020, Vol. 37 Issue (7): 1017-1019    DOI: 10.3969/j.issn.1671-7171.2020.07.018
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Survery on Influencing Factors of Physical Activity in Elderly Patients with Chronic Obstructive Pulmonary Disease
DUAN Li-na, WANG Zhuo
Department of respiratory medicine, Hancheng people's Hospital, Hancheng, Shaanxi 715401
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