Concepedia
Studies in Family Planning · 1973 · 151 citations · 0 references
MedicineGynecologyObstetricsContraceptionFamily PlanningReproductive MedicineContraceptive EffectivenessContraceptive EfficacyIntrauterine ContraceptionIntrauterine DevicesPregnancyContraceptive Effectiveness MeasurementPregnancy Outcome AssessmentPregnancy Rate Assessment