title: [Why do the oral contraceptive pills not work?].
authors.forename: Kaisa
authors.initials: K
authors.lastname: Elomaa
mesh_terms: D003278:Contraceptives, Oral, Hormonal / Q000008:administration & dosage / Q000493:pharmacokinetics; D005260:Female; D006801:Humans; D008597:Menstrual Cycle / Q000502:physiology; D034445:Ovulation Inhibition; D010349:Patient Compliance; D011247:Pregnancy; D017211:Treatment Failure
chemical_list: D003278:Contraceptives, Oral, Hormonal