E-F slope &#x7C; Heart valve XXX &#x7C; Cardiac ultrasound
e-f slope &#x7c; heart valve xxx &#x7c; cardiac ultrasound
E-F slope &#x7C; Heart valve XXX &#x7C; Cardiac ultrasound
e-f slope &#x7c; heart valve xxx &#x7c; cardiac ultrasound