Fetal trisomy 18 risk:Imp:Pt:Plas.cfDNA:Ord:Dosage of chromosome specific cf DNA
fetal trisomy 18 risk:imp:pt:plas.cfdna:ord:dosage of chromosome specific cf dna
Fetal trisomy 18 risk:Impression/interpretation of study:To identify measures at a point in time:Plasma.cfDNA:Ordinal:Dosage of chromosome specific cf DNA
fetal trisomy 18 risk:impression/interpretation of study:to identify measures at a point in time:plasma.cfdna:ordinal:dosage of chromosome specific cf dna