[Microval].
D003277:Contraceptives, Oral, Combined / Q000008:administration & dosage; D004347:Drug Interactions; D005260:Female; D006801:Humans; D016912:Levonorgestrel; D009644:Norgestrel / Q000008:administration & dosage
D003277:Contraceptives, Oral, Combined; D009644:Norgestrel; D016912:Levonorgestrel
Microval.