The Lancet · 1973 · 156 citations · 1 references
MedicineMaternal HealthObstetricsContraceptionMaternal-fetal MedicineReproductive HealthBirth Defects EpidemiologyContraceptive EpidemiologyContraceptive MethodsContraceptive SafetyContraceptive UseFemale ContraceptionBirth ComplicationsOral Contraceptive EffectsOral Contraceptive Pills
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