老年慢性阻塞性肺疾病血清25-羟维生素D与肺功能及CAT评分关系
노년만성조새성폐질병혈청25-간유생소D여폐공능급CAT평분관계
The Relationship Among 25-Hydroxy Vitamin D Level in Serum with the Lung Function and CAT Score of Elderly Patients with COPD
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