Key references: Prenatal diagnosis of Down syndrome

  • Salomon LJ, Sotiriadis A, Wulff CB, Odibo A, Akolekar R. Risk of miscarriage following amniocentesis or chorionic villus sampling: systematic review of literature and updated meta-analysis. Ultrasound Obstet Gynecol 2019;54(4):442–51. https://www.ncbi.nlm.nih.gov/pubmed/31124209