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Chen SY, Chen CH, Sun MH, Lee HT, Shen CC.Chen SY, et al. Among authors: chen ch.J Chin Med Assoc. 2011 Mar;74(3):110-4. doi: 10.1016/j.jcma.2011.01.024. Epub 2011 Mar 2.J Chin Med Assoc. 2011.PMID: 21421204Free article.