title: [Long-cycle oral contraceptives--a progress?].
authors.affiliation: Institutt for farmakoterapi, Postboks 1065 Blindern, 0316 Oslo. elena.kvan@medisin.uio.no
authors.forename: Elena
authors.initials: E
authors.lastname: Kvan
authors.forename: Sigrid
authors.initials: S
authors.lastname: Narum
mesh_terms: D003276:Contraceptives, Oral / Q000009:adverse effects / Q000494:pharmacology* / Q000627:therapeutic use; D005260:Female; D006801:Humans; D008597:Menstrual Cycle / Q000187:drug effects; D008598:Menstruation / Q000187:drug effects*; D008599:Menstruation Disturbances / Q000188:drug therapy*
chemical_list: D003276:Contraceptives, Oral