title: Reply: To PMID 23939754.
authors.affiliation: Department of Obstetrics and Gynecology 'L. Mangiagalli', Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Milan, Italy.
authors.forename: N
authors.initials: N
authors.lastname: Persico
authors.forename: K H
authors.initials: KH
authors.lastname: Nicolaides
mesh_terms: D004314:Down Syndrome / Q000000981:diagnostic imaging*; D015150:Echocardiography, Doppler; D005260:Female; D005318:Fetal Heart / Q000000981:diagnostic imaging*; D006330:Heart Defects, Congenital / Q000000981:diagnostic imaging*; D006352:Heart Ventricles / Q000000981:diagnostic imaging*; D006801:Humans; D011247:Pregnancy; D014262:Tricuspid Valve Insufficiency / Q000000981:diagnostic imaging*