title: Diurnal variation in the oestrogen-creatinine ratio in pregnancy.
mesh_terms: D002940:Circadian Rhythm; D003404:Creatinine / Q000378:metabolism* / Q000652:urine; D004967:Estrogens / Q000378:metabolism* / Q000652:urine; D005260:Female; D005865:Gestational Age; D006801:Humans; D011247:Pregnancy
chemical_list: D004967:Estrogens; D003404:Creatinine