1. American College of Cardiology Foundation/American
Heart Association Task Force on Practice Guidelines, American Society
of Echocardiography, American Society of Nuclear Cardiology, et al.
2009. ACCF/AHA focused update on perioperative beta blockade
incorporated into the ACC/AHA 2007 guidelines on perioperative
cardiovascular evaluation and care for noncardiac surgery. J Am Coll Cardiol.