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Vaccarino V, Johnson BD, Sheps DS, Reis SE, Kelsey SF, Bittner V, Rutledge T, Shaw LJ, Sopko G, Bairey Merz CN; National Heart, Lung, and Blood Institute.Vaccarino V, et al. Among authors: bittner v.J Am Coll Cardiol. 2007 Nov 20;50(21):2044-50. doi: 10.1016/j.jacc.2007.07.069. Epub 2007 Nov 5.J Am Coll Cardiol. 2007.PMID: 18021871Free article.Clinical Trial.