Chromosomal microarray as primary diagnostic genomic tool for pregnancies at increased risk within a population-based combined first-trimester screening program. - Vogel I; Petersen OB; Christensen R; Hyett J; Lou S; Vestergaard EM (Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology, 2018)