Background Noninvasive prenatal screening is more effective in screening for fetal aneuploidy than does traditional serological screening. We attempted to analyze the real-world data about the positive predictive value (PPV) for chromosome aneuploidy. and chromosome copy number variation (CNV) obtained by noninvasive prenatal testing (NIPT) . and to explore the pregnancy outcome for f... https://safeersappliancers.shop/product-category/grundig-gnv22620-full-size-integrated-dishwasher/