Fetal blood:Vol:Pt:^Patient:Qn:Kleihauer-Betke
fetal blood:vol:pt:^patient:qn:kleihauer-betke
Fetal blood:Volume:To identify measures at a point in time:^Patient:Quantitative:Kleihauer-Betke
fetal blood:volume:to identify measures at a point in time:^patient:quantitative:kleihauer-betke