American Journal of Obstetrics and Gynecology · 1980 · 110 citations · 39 references
MedicineEndocrinologyObstetricsEmbryologyMaternal-fetal MedicineReproductive EndocrinologyFetal PhysiologyPlacental BiologyPlacental PhysiologyPregnancyPregnancy EndocrinologyPregnancy PhysiologyGestation PeriodGestation PhysiologyGestational Hormone RegulationGlycoprotein HormonesPlacental CellsPlacental Development Across GestationSerum Human Chorionic Gonadotropin Correlation
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