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Expanded conventional first trimester screening.
Carmichael JB, Liu HP, Janik D, Hallahan TW, Nicolaides KH, Krantz DA.
Prenat Diagn 2017;37:802-807. pdf -
Implementation of maternal blood cell-free DNA testing in early screening for aneuploidies.
Gil MM, Quezada MS, Bregant B, Ferraro M, Nicolaides KH.
Ultrasound Obstet Gynecol 2013;42:34-40. pdf