American College of Cardiology key data elements and definitions for measuring the clinical management and outcomes of patients with acute coronary syndromes31This document was approved by the American College of Cardiology Board of Trustees in November 2001.32When citing this document, the American College of Cardiology would appreciate the following citation format: Cannon CP, Battler A, Brindis RG, Cox JL, Ellis SG, Every NR, Flaherty JT, Harrington RA, Krumholz HM, Simoons ML, Van de Werf FJJ, Weintraub