title: Correspondence regarding research letter published by Arigita et al.
authors.forename: Robert
authors.initials: R
authors.lastname: Lachmann
mesh_terms: D005260:Female; D006257:Head / Q000000981:diagnostic imaging*; D006801:Humans; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D016135:Spinal Dysraphism / Q000175:diagnosis*; D014463:Ultrasonography