Bell, E T Urinary steroid and gonadotrophin excretion in women following long-term use of oral contraceptives. [electronic resource] - Lancet (London, England) Aug 1967 - 442-4 p. digital Publication Type: Journal Article ISSN: 0140-6736 Standard No.: 10.1016/s0140-6736(67)90855-0 doi Subjects--Topical Terms: AdultAnimalsBiological AssayContraceptives, Oral--administration & dosageEstradiol--urineEstriol--urineEstrone--urineEthinyl Estradiol--metabolismFemaleGonadotropins, Pituitary--urineHumansLynestrenol--metabolismMestranol--metabolismMiceNorethindrone--metabolismNorethynodrel--metabolismOrgan Size--drug effectsOvary--drug effectsPituitary Gland--drug effectsPregnanediol--urine