Pre ejection time:Time:Pt:Heart.valve.XXX:Qn:US
pre ejection time:time:pt:heart.valve.xxx:qn:us
Pre ejection time:Time:To identify measures at a point in time:Heart.valve.Not specified:Quantitative:Ultrasound
pre ejection time:time:to identify measures at a point in time:heart.valve.not specified:quantitative:ultrasound