title: [Comparative studies on the ovulation inhibitor Tri-Ervonum following a more-than-1-year administration].
mesh_terms: D001315:Australia; D003276:Contraceptives, Oral / Q000008:administration & dosage*; D003279:Contraceptives, Oral, Sequential / Q000008:administration & dosage*; D004338:Drug Combinations; D004341:Drug Evaluation; D004997:Ethinyl Estradiol / Q000008:administration & dosage*; D005260:Female; D006801:Humans; D008535:Megestrol / Q000008:administration & dosage*; D010060:Ovulation / Q000187:drug effects*
chemical_list: D003276:Contraceptives, Oral; D003279:Contraceptives, Oral, Sequential; D004338:Drug Combinations; D004997:Ethinyl Estradiol; D008535:Megestrol
vernacular_title: Vergleichende Untersuchungen über den Ovulationshemmer Tri-Ervonum nach mehr als 1jähriger Einnahme