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Wang W, Chen MH, Chiou SH, Lai HC, Wang X, Yan J, Zhang Z.Wang W, et al. Among authors: yan j.BMC Med Res Methodol. 2016 Sep 17;16(1):122. doi: 10.1186/s12874-016-0220-5.BMC Med Res Methodol. 2016.PMID: 27639560Free PMC article.
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