1. Frank MJ, Abdulla FAM, Canedo MI, Saylors RE: Long-term management of hypertrophic obstructive cardiomyopathy. Am J Cardiol 42: 993, 1978.
2. Shah PM, Adelman AG, Wigle ED, Gobel FL, Bruchell HB: The natural (and unnatural) history of hypertrophic obstructive cardiomyopathy. Circ Res 34/35 Suppl 2: 179, 1974.
3. Loogen G, Kuhn H, Krelhaus W: Natural history of hypertrophic cardiomyopathy and the effects of therapy. In: Kaltenbach M, Loogen F, Olsen EGJ (eds), Cardiomyopathy and myocardial biopsy. Springer Berlin, 1978, pp 286 – 299.
4. McKenna WJ, Deanfield J, Faruqui A, England D, Oakley C, Goodwin JF: Prognosis in hypertrophic cardiomyopathy: role of age and clinical, electrocardiographic and hemodynamic features. Am J Cardiol 47: 432, 1981.
5. Loogen F, Kuhn H, Gietzen B, Losse B, Schulte HD, Bircks W: Clinical course and prognosis of patients with typical and atypical hypertrophic obstructive and with hypertrophic non-obstructive cardiomyopathy. Eur Heart J 4 (suppl) 145 – 153, 1983.