Phenotypic spectrum and patterns of left ventricular hypertrophy in hypertrophic cardiomyopathy: morphologic observations and significance as assessed by two- dimensional echocardiography in 600 patients. J Am Coll Cardiol. 1995;26:1699 708. S7.4-17. Wigle ED, Rakowski H, Kimball BP, et al. Hypertrophic car- diomyopathy. Clinical spectrum and treatment. Circulation. 1995;92:1680 92. S7.4-18. Christiaans I, Birnie E, van Langen IM, et al. The yield of risk strati- fication for sudden cardiac death in hypertrophic cardiomyopathy myosin-binding protein C gene mutation carriers: focus on predic- tive screening. Eur Heart J. 2010;31:842 8. S7.4-19. Olivotto I, Girolami F, Ackerman MJ, et al. Myofilament protein gene mutation screening and outcome of patients with hypertrophic car- diomyopathy. Mayo Clin Proc. 2008;83:630 8. S7.4-20. Christiaans I, van Langen IM, Birnie E, et al. Genetic counseling and cardiac care in predictively tested hypertrophic cardiomyopathy mutation carriers: the patients perspective. Am J Med Genet. 2009 149a 1444 51. S7.4-21. Hamang A, Eide GE, Rokne B, et al. Predictors of heart-focused anxiety in patients undergoing genetic investigation and counseling of long QT syndrome or hypertrophic cardiomyopathy: a one year follow-up. J Genet Counsel. 2012;21:72 84. S7.4-22. Bos JM, Will ML, Gersh BJ, et al. Characterization of a phenotype- based genetic test prediction score for unrelated patients with hypertrophic cardiomyopathy. Mayo Clin Proc. 2014;89:727 37. S7.4-23. Sorajja P, Nishimura RA, Ommen SR, et al. Use of echocardiography in patients with hypertrophic cardiomyopathy: clinical implications of massive hypertrophy. J Am Soc Echocardiogr. 2006;19:788 95. S7.4-24. Spirito P, Bellone P, Harris KM, et al. Magnitude of left ventricular hypertrophy and risk of sudden death in hypertrophic cardiomyopa- thy. N Engl J Med. 2000;342:1778 85. S7.4-25. Bos JM, Maron BJ, Ackerman MJ, et al. Role of family history of sudden death in risk stratification and prevention of sudden death with implantable defibrillators in hypertrophic cardiomyopathy. 