title: Serum prostaglandin F2alpha levels and contraceptive techniques.
mesh_terms: D003267:Contraception; D003273:Contraceptive Devices; D003276:Contraceptives, Oral / Q000494:pharmacology; D005260:Female; D006801:Humans; D007434:Intrauterine Devices; D008598:Menstruation; D011453:Prostaglandins / Q000097:blood*
chemical_list: D003276:Contraceptives, Oral; D011453:Prostaglandins