海量图书期刊资源，随时随地畅享阅读乐趣
Pulsed doppler echocardiographic detection of right-sided valve regurgitation: Experimental results and clinical significanceAlan D. Waggoner; Miguel A. Quinones; James B. Young; Tedd A. Brandon; Abid A. Shah; Mario S. Verani; Richard R. Miller · 1981