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Chen PY, Song CY, Yen HY, Lin PC, Chen SR, Lu LH, Tien CL, Wang XM, Lin CH.Chen PY, et al. Among authors: chen sr.BMC Geriatr. 2021 Jul 31;21(1):449. doi: 10.1186/s12877-021-02390-9.BMC Geriatr. 2021.PMID: 34332537Free PMC article.Clinical Trial.
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