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Spertus J, Safley D, Garg M, Jones P, Peterson ED.Spertus J, et al.J Am Coll Cardiol. 2005 Nov 15;46(10):1838-44. doi: 10.1016/j.jacc.2005.05.092. Epub 2005 Oct 24.J Am Coll Cardiol. 2005.PMID: 16286168Free article.