title: Editors' choice.
authors.forename: Aris
authors.initials: A
authors.lastname: Papageorghiou
authors.forename: Tarek
authors.initials: T
authors.lastname: El-Toukhy
mesh_terms: D053595:Embryonic Stem Cells; D004724:Endoscopy; D006176:Gynecology / Q000639:trends*; D006801:Humans; D009774:Obstetrics / Q000639:trends*; D011296:Prenatal Diagnosis / Q000295:instrumentation / Q000379:methods; D012107:Research Design; D006113:United Kingdom