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APA Citation
Gil, M. M., Quezada, M. S., Revello, R., Akolekar, R., & Nicolaides, K. H. (n.d.). analysis of cell‐free DNA in maternal blood in screening for fetal aneuploidies: updated meta‐analysis. Ultrasound in obstetrics & gynecology, 45, 249–266. http://access.bl.uk/ark:/81055/vdc_100075208471.0x000015