Velocity-time integral.XXX/Velocity-time integral 2.XXX:LenRto:Pt:Circulatory system.XXX:Qn:US.doppler
velocity-time integral.xxx/velocity-time integral 2.xxx:lenrto:pt:circulatory system.xxx:qn:us.doppler
Velocity-time integral.XXX/Velocity-time integral 2 by US.doppler
velocity-time integral.xxx/velocity-time integral 2 by us.doppler