L.A. Fleisher, J.A. Beckman, K.A. Brown, H. Calkins i inni. ACC/AHA 2007 Guidelines on Perioperative Cardiovascular Evaluation and Care for Noncardiac Surgery: Executive Summary. „Journal of the American College of Cardiology”. 50 (17), s. 1707–1732, 2007. DOI: 10.1016/j.jacc.2007.09.001. PMID: 17950159. (ang.).
L.A. Fleisher, J.A. Beckman, K.A. Brown, H. Calkins i inni. ACC/AHA 2007 Guidelines on Perioperative Cardiovascular Evaluation and Care for Noncardiac Surgery: Executive Summary. „Journal of the American College of Cardiology”. 50 (17), s. 1707–1732, 2007. DOI: 10.1016/j.jacc.2007.09.001. PMID: 17950159. (ang.).