title: [Clinical evaluation of 1,668 cycles of triphasic oral contraception (Trigynon). Multicentric Belgian study].
mesh_terms: D000293:Adolescent; D000328:Adult; D003276:Contraceptives, Oral; D003277:Contraceptives, Oral, Combined / Q000008:administration & dosage; D004997:Ethinyl Estradiol / Q000008:administration & dosage*; D005260:Female; D006801:Humans; D016912:Levonorgestrel; D008875:Middle Aged; D009644:Norgestrel / Q000008:administration & dosage*
chemical_list: D003276:Contraceptives, Oral; D003277:Contraceptives, Oral, Combined; D009644:Norgestrel; D004997:Ethinyl Estradiol; D016912:Levonorgestrel
vernacular_title: Evaluation clinique de 1.668 cycles sous contraception orale triphasique (Trigynon). Etude belge multicentrique.