Fetal trisomy 21 risk:Likelihood:Pt:WBC.DNA+Plas.cfDNA:Qn:Dosage of chromosome specific cf DNA
fetal trisomy 21 risk:likelihood:pt:wbc.dna+plas.cfdna:qn:dosage of chromosome specific cf dna
Trisomy 21 risk Dosage of chromosome-specific cfDNA Qn (Plasma cell-free+WBC DNA)
trisomy 21 risk dosage of chromosome-specific cfdna qn (plasma cell-free+wbc dna)