title: Improving sonographic evaluation of the umbilical cord at the second-trimester anatomy scan.
authors.affiliation: Fetal Medicine Center, Department of Obstetrics and Gynecology, Clinica Las Condes, Casilla 208, Santiago 20, Chile. fetalmed@yahoo.com
authors.forename: Waldo
authors.initials: W
authors.lastname: Sepulveda
authors.forename: Amy E
authors.initials: AE
authors.lastname: Wong
authors.forename: Luisa
authors.initials: L
authors.lastname: Gomez
authors.forename: Juan L
authors.initials: JL
authors.lastname: Alcalde
mesh_terms: D005260:Female; D006801:Humans; D011247:Pregnancy; D011262:Pregnancy Trimester, Second; D018615:Ultrasonography, Doppler, Color; D016216:Ultrasonography, Prenatal / Q000379:methods* / Q000592:standards; D014469:Umbilical Arteries / Q000196:embryology; D014470:Umbilical Cord / Q000000981:diagnostic imaging* / Q000196:embryology; D014471:Umbilical Veins / Q000196:embryology