The ratio of post-valvular aorta to valvular orifice cross-sectional areas: a new haemodynamic index of clinical importance in patients with aortic stenosis?
K. Isaaz, The ratio of post-valvular aorta to valvular orifice cross-sectional areas: a new haemodynamic index of clinical importance in patients with aortic stenosis?, EUR HEART J, 20(18), 1999, pp. 1294-1296