A wave duration.pulmonary vein/A wave duration.mitral valve:TRto:Pt:Circulatory system:Qn:US
a wave duration.pulmonary vein/a wave duration.mitral valve:trto:pt:circulatory system:qn:us
Circulatory system Pulmonary vein A duration/Mitral vave A duration by US
circulatory system pulmonary vein a duration/mitral vave a duration by us