title: Reply to the letter: "comments on non-invasive prenatal testing".
authors.affiliation: Department of Obstetrics and Prenatal Medicine, University of Bonn, Bonn, Germany, gwendolin.manegold-brauer@usb.ch.
authors.forename: Gwendolin
authors.initials: G
authors.lastname: Manegold-Brauer
authors.forename: Annegret
authors.initials: A
authors.lastname: Geipel