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Yin JH, Chen SY, Lin CC, Sung YF, Chou CH, Chung CH, Chien WC, Yang FC, Tsai CK, Tsai CL, Lin GY, Lee JT.Yin JH, et al. Among authors: chien wc.Postgrad Med J. 2019 Feb;95(1120):72-77. doi: 10.1136/postgradmedj-2018-136220. Epub 2019 Apr 1.Postgrad Med J. 2019.PMID: 30936249Free PMC article.
Chung CH, Lai CH, Chu CM, Pai L, Kao S, Chien WC.Chung CH, et al. Among authors: chien wc.BMC Public Health. 2012 Sep 6;12:744. doi: 10.1186/1471-2458-12-744.BMC Public Health. 2012.PMID: 22950416Free PMC article.