1. 1. Yanagisawa N, Honda M, Watanabe H, Nakamura F, Higuchi Y, Wada T. Counterclockwise rotation of the heart: a correlative study with tomographic echocardiography. J Cardiogr 1981; 11: 881-9.
2. 2. Fukuda N, Asai M, Tominaga T, et al. Noninvasive studies of dynamic left ventricular outflow obstruction in patients with sigmoid septum. J Cardiogr 1984; 14: 445-57.
3. 3. Oki T, Asai M, Takemura H, et al. Pulsed Doppler echocardiographic assessment of diastolic left ventricular hemodynamics in hypertrophic cardiomyopathy: relationship between the mode of left ventricular filling and the distribution of left ventricular hypertrophy. J Cardiogr 1983; 13: 523-35 (Japanese).
4. 4. Azechi N, Morita Y, Inoue M, Kuzuyama R, Imataka K. Age-associated morphological change in interventricular septum. Rinsho Byori 1993; 41: 285-8.
5. 5. Sakurai S, Ashida T, Takahashi N, Fujii J. Effects of antihypertensive treatment on the thickening of the basal portion of the interventricular septum in essential hypertension. J Cardiol 1998; 31: 151-8.