title: [Ultrasound markers of Down's syndrome during the second trimester--guidelines of the Israeli Association of Obstetrics and Gynecology and Israeli Association of Medical Genetics].
mesh_terms: D004314:Down Syndrome / Q000175:diagnosis*; D005260:Female; D006801:Humans; D007557:Israel; D011247:Pregnancy; D011262:Pregnancy Trimester, Second; D018570:Risk Assessment / Q000379:methods; D059039:Standard of Care; D016216:Ultrasonography, Prenatal / Q000379:methods / Q000592:standards