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Chien TW, Wang WC, Huang SY, Lai WP, Chow JC.Chien TW, et al. Among authors: chow jc.J Med Internet Res. 2011 Aug 15;13(3):e61. doi: 10.2196/jmir.1785.J Med Internet Res. 2011.PMID: 21844001Free PMC article.