![Atrial filling fraction obtained by aortic root echocardiogram in man.]()
Atrial filling fraction obtained by aortic root echocardiogram in man.NAWATA, TAKAKO; MATSUZAKI, MASUNORI; ANNO, YOSHITO; TOMA, YOICHI; MAEDA, TOSHIAKI; OGAWA, HIROSHI; MATSUDA, YASUO; KUMADA, TOSHIAKI; KUSUKAWA, REIZO · Japanese Circulation Journal · 1986