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Chen SH, Chen SS, Lai CL, Su FY, Tzeng IS, Chen LK.Chen SH, et al. Among authors: chen ss, chen lk.BMC Med Educ. 2020 Jul 2;20(1):211. doi: 10.1186/s12909-020-02118-0.BMC Med Educ. 2020.PMID: 32615968Free PMC article.Clinical Trial.
Chen LK, Chen SS, Huang CH, Yang HJ, Lin CJ, Chien KL, Fan SZ.Chen LK, et al. Among authors: chen ss.Pain Res Treat. 2013;2013:259306. doi: 10.1155/2013/259306. Epub 2013 Feb 4.Pain Res Treat. 2013.PMID: 23431434Free PMC article.