Response to "The importance of determining the limit of detection of non‐invasive prenatal testing methods". (September 2016) - Fiorentino, Francesco; Bono, Sara; Pizzuti, Francesca; Mariano, Martina; Polverari, Arianna; Duca, Sara; Sessa, Mariateresa; Baldi, Marina; Diano, Laura; Spinella, Francesca