American Journal of Obstetrics and Gynecology · 1990 · 126 citations · 15 references
MedicineMaternal HealthObstetricsMaternal-fetal MedicineObstetric UltrasoundUltrasonographyDoppler UltrasonographyDoppler UltrasoundDoppler Velocity MeasurementObstetric UltrasonographyPregnancyPrenatal AssessmentBlood Flow Doppler AssessmentDoppler Blood Flow AssessmentEchocardiographic Doppler Assessment
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