title: Effect of contraceptive pills on the distribution of sexual activity in the menstrual cycle.
mesh_terms: D002986:Clinical Trials as Topic; D003075:Coitus / Q000187:drug effects*; D003276:Contraceptives, Oral / Q000494:pharmacology*; D003338:Corpus Luteum / Q000502:physiology; D005260:Female; D006801:Humans; D007989:Libido / Q000187:drug effects; D008598:Menstruation; D008656:Mestranol / Q000494:pharmacology*; D009948:Orgasm / Q000187:drug effects*; D010060:Ovulation / Q000187:drug effects; D011374:Progesterone / Q000502:physiology
chemical_list: D003276:Contraceptives, Oral; D011374:Progesterone; D008656:Mestranol