title: The twin challenge in prenatal diagnosis.
authors.forename: Eric
authors.initials: E
authors.lastname: Jauniaux
authors.forename: Lyn S
authors.initials: LS
authors.lastname: Chitty
mesh_terms: D004200:Diseases in Twins / Q000175:diagnosis* / Q000196:embryology; D005260:Female; D006801:Humans; D011247:Pregnancy; D011296:Prenatal Diagnosis; D014427:Twins