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Nguyen DH, Patrick JD.Nguyen DH, et al. Among authors: patrick jd.J Am Med Inform Assoc. 2014 Sep-Oct;21(5):893-901. doi: 10.1136/amiajnl-2013-002516. Epub 2014 May 22.J Am Med Inform Assoc. 2014.PMID: 24853067Free PMC article.