Concepedia
PubMed · 1974 · 33 citations · 0 references
MedicineGynecologyObstetricsObstetric UltrasoundUltrasonographyUltrasoundFetal ImagingFirst-trimester UltrasoundObstetric UltrasonographyPregnancyPregnancy ImagingPrenatal CareFirst Trimester UltrasonographyFirst-trimester Pregnancy UltrasoundPregnancy Ultrasonography