![PDF] First-trimester risk calculation for trisomy 13, 18, and 21: comparison of the screening efficiency between 2 locally developed programs and commercial software. | Semantic Scholar](https://d3i71xaburhd42.cloudfront.net/a7d5b36f3aa2d8e0d07c528c8bc0752605231cbf/3-Table1-1.png "PDF] First-trimester risk calculation for trisomy 13, 18, and 21: comparison of the screening efficiency between 2 locally developed programs and commercial software. | Semantic Scholar")
PDF] First-trimester risk calculation for trisomy 13, 18, and 21: comparison of the screening efficiency between 2 locally developed programs and commercial software. | Semantic Scholar
False-positive rates for trisomy 21 according to maternal and pregnancy... | Download Table
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Table 3 from The clinical usefulness of biochemical (free β-hCg, PaPP-a) and ultrasound (nuchal translucency) parameters in prenatal screening of trisomy 21 in the first trimester of pregnancy. | Semantic Scholar
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Table II from Screening for trisomies 21, 18 and 13 by maternal age, fetal nuchal translucency, fetal heart rate, free beta-hCG and pregnancy-associated plasma protein-A. | Semantic Scholar
Sex ratio in patients with regular trisomy 21 and in controls by... | Download Table
First Trimester Screening for Trisomy 21 by Maternal Age, Nuchal Translucency and Fetal Nasal Bone in Unselected Pregnancies | IntechOpen
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Statistics of detection of chromosome 21, 18, and 13 trisomies.... | Download Scientific Diagram
Trisomy 13, 18, 21! How do chromosome abnormalities affect pregnancy?!
