title: Thyroid function in oral contraception: is there cyclic variation?
mesh_terms: D000293:Adolescent; D000328:Adult; D003276:Contraceptives, Oral / Q000494:pharmacology*; D005260:Female; D006801:Humans; D008598:Menstruation; D008875:Middle Aged; D011933:Reagent Kits, Diagnostic; D013960:Thyroid Function Tests; D013961:Thyroid Gland / Q000187:drug effects* / Q000502:physiology; D013974:Thyroxine / Q000097:blood / Q000378:metabolism; D014284:Triiodothyronine / Q000097:blood / Q000378:metabolism
chemical_list: D003276:Contraceptives, Oral; D011933:Reagent Kits, Diagnostic; D014284:Triiodothyronine; D013974:Thyroxine