Evaluation of the Z-score accuracy of noninvasive prenatal testing for trisomies 21, 18 and 13: a cohort study based on cell-free fetal DNA and maternal age
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Objective: This study aimed to evaluate the relationship between the Z-score of positive noninvasive prenatal testing (NIPT) results and the positive predictive value (PPV), as well as the correlation between Z-score and cell-fre... ...
