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Roberts WC, Ko JM, Filardo G.Roberts WC, et al. Among authors: filardo g.Am J Cardiol. 2009 Aug 1;104(3):393-405. doi: 10.1016/j.amjcard.2009.03.054. Epub 2009 Jun 6.Am J Cardiol. 2009.PMID: 19616674
Roberts WC, Roberts CC, Vowels TJ, Ko JM, Filardo G, Hamman BL, Matter GJ, Henry AC 3rd, Hebeler RF Jr.Roberts WC, et al. Among authors: filardo g.Am J Cardiol. 2012 May 1;109(9):1334-40. doi: 10.1016/j.amjcard.2011.12.028. Epub 2012 Mar 1.Am J Cardiol. 2012.PMID: 22386959