title: The estrogen-creatinine ratio and the "estrogen index" in normal pregnancy.
mesh_terms: D001322:Autoanalysis; D003404:Creatinine / Q000652:urine*; D004967:Estrogens / Q000652:urine*; D005260:Female; D006801:Humans; D011247:Pregnancy; D013053:Spectrophotometry; D013997:Time Factors
chemical_list: D004967:Estrogens; D003404:Creatinine