Obstetrics and Gynecology · 2009 · 91 citations · 0 references
MedicineGynecologyObstetricsObstetric UltrasoundUltrasonographyUltrasoundDiagnostic UltrasonographyFetal ImagingObstetric UltrasonographyPregnancy DiagnosisPregnancy ImagingPrenatal ImagingFirst Trimester UltrasonographyPregnancy UltrasonographyPrenatal Ultrasonography
© 2009 by The American College of Obstetricians and Gynecologists. Published by Wolters Kluwer Health, Inc. All rights reserved.