EclampsiaPre-EclampsiaMagnesium SulfatePregnancyHELLP SyndromeHypertension, Pregnancy-InducedMaternal MortalityPregnancy Complications, CardiovascularPlacentaPuerperal DisordersPregnancy OutcomePregnancy ComplicationsVascular Endothelial Growth Factor Receptor-1Abruptio PlacentaePregnancy ProteinsPosterior Leukoencephalopathy SyndromeTocolytic AgentsObstetric Labor ComplicationsGestational AgeTrophoblastsObstetricsParity