PubMed · 1984 · 11 citations · 0 references
MedicineMaternal HealthObstetricsHigh-risk PregnancyMaternal-fetal MedicinePrenatal DiagnosisInvasive Prenatal TestingObstetric UltrasonographyPregnancyPregnancy DiagnosisPrenatal CarePrenatal Risk AssessmentAlpha-fetoprotein BiomarkerMaternal Serum Alpha-fetoprotein ScreeningObstetric Risk ScreeningPrenatal Laboratory ScreeningScreening In High-risk Pregnancies