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Representative; yy Society of Cardiovascular Anesthesiologists Representative; zz American Heart Association Representative; xx Mended Hearts Consumer Advocate, Patient Representative; kk American Society of Echocardiography Representative. Author Recusals: Writing committee members are required to recuse themselves from voting on sections to which their specific relationship with industry and other entities may apply; see Appendix 1 for recusal information. This document was approved by the American College of Cardiology Foundation (ACCF) Board of Trustees, American Association for Thoracic Surgery (AATS) Council, Society for Cardiovascular Angiography and Interventions (SCAI) Board of Directors, Society of Thoracic Surgeons (STS) Board of Directors in January 2012 and endorsed by the governing bodies of the American Heart Association