Bonow RO, Douglas PS, Buxton AE, Cohen DJ, Curtis JP, Delong E, Drozda JP, Ferguson TB, Heidenreich PA, Hendel RC, Masoudi FA, Peterson ED, Taylor AJ. ACCF/AHA methodology for the development of quality measures for cardiovascular technology: a report of the American College of Cardiology Foundation/American Heart Association Task Force on Performance Measures. J Am Coll Cardiol. 2011 Sep 27; 58(14):1517-38.