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Singer DE, Chang Y, Fang MC, Borowsky LH, Pomernacki NK, Udaltsova N, Go AS.Singer DE, et al. Among authors: fang mc.Circ Cardiovasc Qual Outcomes. 2009 Jul;2(4):297-304. doi: 10.1161/CIRCOUTCOMES.108.830232. Epub 2009 Jun 9.Circ Cardiovasc Qual Outcomes. 2009.PMID: 20031854Free PMC article.