Pressure gradient.mean:PressDiff:Pt:Patent ductus arteriosis:Qn:US
pressure gradient.mean:pressdiff:pt:patent ductus arteriosis:qn:us
Pressure gradient.mean:PressDiff:Pt:Patent ductus arteriosis:Qn:US
pressure gradient.mean:pressdiff:pt:patent ductus arteriosis:qn:us