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Amer M, Qayyum R.Amer M, et al. Among authors: qayyum r.Am J Cardiol. 2012 Jan 15;109(2):226-30. doi: 10.1016/j.amjcard.2011.08.032. Epub 2011 Oct 12.Am J Cardiol. 2012.PMID: 21996139