Only a minority of sex chromosome abnormalities are detected by a national prenatal screening program for Down syndrome

Viuff MH, Stochholm K, Uldbjerg N, Nielsen BB; Danish Fetal Medicine Study Group, Gravholt CH. Only a minority of sex chromosome abnormalities are detected by a national prenatal screening program for Down syndrome. Hum Reprod. 2015; 30(10): 2419-26.