![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](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
![Schematic diagram of algorithm used for an individual risk calculation... | Download Scientific Diagram Schematic diagram of algorithm used for an individual risk calculation... | Download Scientific Diagram](https://www.researchgate.net/publication/321739059/figure/fig1/AS:873430341648384@1585253429395/Schematic-diagram-of-algorithm-used-for-an-individual-risk-calculation-during.png)
Schematic diagram of algorithm used for an individual risk calculation... | Download Scientific Diagram
![3 questions to ask about Down syndrome testing during pregnancy | Your Pregnancy Matters | UT Southwestern Medical Center 3 questions to ask about Down syndrome testing during pregnancy | Your Pregnancy Matters | UT Southwestern Medical Center](https://s3-us-west-2.amazonaws.com/utsw-patientcare-web-production/original_images/pregnancy_ultrasound_600.jpg)
3 questions to ask about Down syndrome testing during pregnancy | Your Pregnancy Matters | UT Southwestern Medical Center
![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](https://d3i71xaburhd42.cloudfront.net/a7d5b36f3aa2d8e0d07c528c8bc0752605231cbf/7-Table2-1.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
![The assessment of combined first trimester screening in women of advanced maternal age in an Asian cohort | SMJ The assessment of combined first trimester screening in women of advanced maternal age in an Asian cohort | SMJ](http://www.smj.org.sg/sites/default/files/SMJ-56-47-g005.jpg)
The assessment of combined first trimester screening in women of advanced maternal age in an Asian cohort | SMJ
![Risk at term (expressed as a reciprocal) of Down syndrome vs maternal... | Download Scientific Diagram Risk at term (expressed as a reciprocal) of Down syndrome vs maternal... | Download Scientific Diagram](https://www.researchgate.net/publication/12868550/figure/fig1/AS:601616176668703@1520447882459/Risk-at-term-expressed-as-a-reciprocal-of-Down-syndrome-vs-maternal-age-in-years-in.png)