Trisomy 21+Trisomy 18 risk:Likelihood:Pt:^Fetus:Qn
trisomy 21+trisomy 18 risk:likelihood:pt:^fetus:qn
Trisomy 21+Trisomy 18 risk:Likelihood:Pt:^Fetus:Qn
trisomy 21+trisomy 18 risk:likelihood:pt:^fetus:qn