The length of the first three menstrual cycles after combined oral contraceptive treatment.
D000293:Adolescent; D000328:Adult; D000568:Amenorrhea / Q000139:chemically induced; D003276:Contraceptives, Oral / Q000008:administration & dosage* / Q000009:adverse effects; D005260:Female; D006801:Humans; D008598:Menstruation / Q000187:drug effects*; D008599:Menstruation Disturbances / Q000139:chemically induced; D008656:Mestranol / Q000008:administration & dosage; D008875:Middle Aged; D009640:Norethindrone / Q000008:administration & dosage
D003276:Contraceptives, Oral; D008656:Mestranol; D009640:Norethindrone