title: Comparative studies of two oral contraceptives containing DL norgestrel and D norgestrel.
mesh_terms: D000293:Adolescent; D000328:Adult; D003276:Contraceptives, Oral; D004341:Drug Evaluation; D004997:Ethinyl Estradiol / Q000494:pharmacology*; D005260:Female; D006801:Humans; D009644:Norgestrel / Q000494:pharmacology*
chemical_list: D003276:Contraceptives, Oral; D009644:Norgestrel; D004997:Ethinyl Estradiol