title: [Extended clinical studies on a new biphasic preparation].
mesh_terms: D000293:Adolescent; D000328:Adult; D002986:Clinical Trials as Topic; D003276:Contraceptives, Oral; D004338:Drug Combinations; D004341:Drug Evaluation; D004997:Ethinyl Estradiol / Q000008:administration & dosage / Q000009:adverse effects; D005260:Female; D006801:Humans; D008875:Middle Aged; D009644:Norgestrel / Q000008:administration & dosage / Q000009:adverse effects
chemical_list: D003276:Contraceptives, Oral; D004338:Drug Combinations; D009644:Norgestrel; D004997:Ethinyl Estradiol
vernacular_title: Bericht über die erweiterte klinische Prüfung eines neuen Zwei-Stufen-Präparats