TY - JOUR AU - Gil, M M; Quezada, M S; Revello, R TI - Analysis of cell-free DNA in maternal blood in screening for fetal aneuploidies: updated meta-analysis JO - Ultrasound Obstet Gynecol VL - 45 PY - 2015 DO - 10.1002/uog.14791 L3 - PubMed-ID: 25639627 SP - 249 EP - 266 N1 - et al. ER -