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. 2016 May 11;1:16013. doi: 10.1038/npjgenmed.2016.13

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Copyright © 2016 Center of Excellence in Genomic Medicine Research/Macmillan Publishers Limited

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Evaluation on the effect of SNP count on estimated fetal DNA fraction. (A) Comparison between the estimated and actual fetal DNA fraction at different number of SNPs. (B) Deviation between the estimated and actual fetal DNA fraction at different number of SNPs. Horizontal red lines represent the 95% confidence interval of deviations.