Fetal trisomy 13 risk:Imp:Pt:Plas.cfDNA:Ord:Dosage of chromosome specific cf DNA
fetal trisomy 13 risk:imp:pt:plas.cfdna:ord:dosage of chromosome specific cf dna
Fet Ts 13 risk Plas.cfDNA Ql
fet ts 13 risk plas.cfdna ql