title: The effect of oral contraceptives on serum copper levels in Nigerian women.
mesh_terms: D000293:Adolescent; D000328:Adult; D003276:Contraceptives, Oral / Q000494:pharmacology*; D003300:Copper / Q000097:blood*; D005260:Female; D006801:Humans; D007434:Intrauterine Devices; D008875:Middle Aged; D009549:Nigeria; D013054:Spectrophotometry, Atomic
chemical_list: D003276:Contraceptives, Oral; D003300:Copper