Obstetrics and Gynecology · 2006 · 16 citations · 0 references
MedicineEndocrinologyOncologyContraceptionReproductive HealthReproductive MedicineContraceptive EpidemiologyContraceptive MethodsContraceptive UseFemale ContraceptionHormonal ContraceptionCombined Oral Contraceptive TreatmentDisease Incidence ComparisonFemale Contraceptive UseHormone-releasing Intrauterine DeviceIncidence RateIncidence Rate EstimationLevonorgestrel Intrauterine System TreatmentLevonorgestrel-releasing Intrauterine System
Backman, Tiina MD; Rauramo, Ilkka MD; Jaakkola, Kimmo MD; Inki, Pirjo MD; Vaahtera, Katja MD; Launonen, Aino MD; Koskenvuo, Markku MD