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Tsai TN, Tzeng BH, Hong GJ, Chu KM, Cheng SM, Yang SP.Tsai TN, et al. Among authors: cheng sm.J Am Soc Echocardiogr. 2006 May;19(5):579.e1-3. doi: 10.1016/j.echo.2005.12.015.J Am Soc Echocardiogr. 2006.PMID: 16644446
Tsai SH, Lin YY, Chu SJ, Hsu CW, Cheng SM.Tsai SH, et al. Among authors: cheng sm.Yonsei Med J. 2010 Mar;51(2):151-63. doi: 10.3349/ymj.2010.51.2.151. Epub 2010 Feb 12.Yonsei Med J. 2010.PMID: 20191004Free PMC article.Review.