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Pharmacokinetics of levonorgestrel and ethinylestradiol in 9 women who received a low-dose oral contraceptive over a treatment period of 3 months and, after a wash-out phase, a single oral administration of the same contraceptive formulation

ContraceptionHormonal ContraceptiveOral ContraceptiveMedicineSame Contraceptive FormulationGynecologyLow-dose Oral ContraceptivePharmacotherapyPharmacologyPharmacokineticsTreatment PeriodSide Effect