ESC Guidelines for the diagnosis and treatment of acute and chronic heart failure 2012: the Task Force for the Diagnosis and Treatment of Acute and Chronic Heart Failure 2012 of the European Society of Cardiology. Eur Heart J 2012; 33:1787 847. 21. National Collaborating Centre for Acute and Chronic Conditions. Chronic heart failure: management of chronic heart failure in adults in primary and secondary care (NICE clinical guideline 108): Available at: http://www.nice. org.uk/nicemedia/live/13099/50517/50517.pdf. Accessed March 11, 2013. 22. Guyatt GH, Akl EA, Crowther M, et al. Executive summary: Antith- rombotic Therapy and Prevention of Thrombosis, 9th ed: American College of Chest Physicians Evidence-Based Clinical Practice Guide- lines. Chest 2012;141:7S 47S. 23. Costanzo MR, Dipchand A, Starling R, et al. The International Society of Heart and Lung Transplantation Guidelines for the care of heart transplant recipients. J Heart Lung Transplant 2010;29:914 56. 24. Maron BJ, Towbin JA, Thiene G, et al. Contemporary de nitions and classi cation of the cardiomyopathies: an American Heart Association Scienti c Statement from the Council on Clinical Cardiology, Heart Failure and Transplantation Committee; Quality of Care and Outcomes Research and Functional Genomics and Translational Biology Interdis- ciplinary Working Groups; and Council on Epidemiology and Preven- tion. Circulation 2006;113:1807 16. 25. Ashley EA, Hershberger RE, Caleshu C, et al. Genetics and cardiovas- cular disease: a policy statement from the American Heart Association. Circulation 2012;126:142 57. 26. Patel MR, White RD, Abbara S, et al. 2013 ACCF/ACR/ASE/ASNC/ SCCT/SCMR appropriate utilization of cardiovascular imaging in heart failure: a joint report of the American College of Radiology Appropri- ateness Criteria Committee and the American College of Cardiology Foundation Appropriate Use Criteria Task Force. J Am Coll Cardiol 2013;61:2207 31. 27. Patel MR, Dehmer GJ, Hirshfeld JW, et al. 