OP08.11: How the proportion of invasive prenatal diagnosis changed in 33, 679 invasive procedures after the introduction of cfDNA. (September 2016) - Coco, C.; Padula, F.; D'Emidio, L.; Mesoraca, A.; Mobili, L.; Brizzi, C.; Raffio, R.; Mangiafico, L.; Dugo, N.; Vigna, R.; Milite, V.; Giorlandino, C.