Sequential mestranol-chlormadinone acetate as an oral contraceptive.
D002715:Chlormadinone Acetate / Q000008:administration & dosage*; D003276:Contraceptives, Oral / Q000008:administration & dosage*; D004357:Drug Synergism; D005260:Female; D006801:Humans; D008656:Mestranol / Q000008:administration & dosage*
D003276:Contraceptives, Oral; D002715:Chlormadinone Acetate; D008656:Mestranol