Elstein, M The effect of daily norethisterone (0.35 mg) on cervical mucus and on urinary LH, pregnanediol and oestrogen levels. [electronic resource] - British journal of obstetrics and gynaecology Feb 1976 - 165-8 p. digital Publication Type: Journal Article ISSN: 0306-5456 Standard No.: 10.1111/j.1471-0528.1976.tb00801.x doi Subjects--Topical Terms: Cervix Mucus--drug effectsEstrogens--urineFemaleHumansLuteinizing Hormone--urineNorethindrone--administration & dosagePregnanediol--urine