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Europe PMC (PubMed Central) · 1978 · 22 citations · 0 references
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MedicineGynecologyObstetricsMaternal-fetal MedicineObstetric ComplicationsReproductive MedicineObstetric ManagementObstetric UltrasonographyPregnancyPregnancy DiagnosisPrenatal CarePrevention Of Obstetric HemorrhageObstetric Risk Assessment