Sonographer Learning Curve in Three Dimensional Left Ventricular Ejection Fraction (3DLVEF) Measurement
2001 ◽
Vol 8
(4)
◽
pp. 466-471
◽
1989 ◽
Vol 3
(3)
◽
pp. 260-268
◽
1998 ◽
Vol 11
(6)
◽
pp. 620-630
◽