Forest plot of MPSS and TMPS for SCA (45,X, 47,XXX, 47,XXY and 47,XYY combined) in pregnant women selected at high risk of fetal aneuploidy. FN: false negative, FP: false positive, MPSS: massively parallel shotgun sequencing, TMPS: targeted massively parallel sequencing, TN: true negative and TP: true positive.