title: Estriol-creatinine ratio in normal pregnancy.
mesh_terms: D003404:Creatinine / Q000652:urine*; D004964:Estriol / Q000652:urine*; D004967:Estrogens / Q000652:urine; D005260:Female; D006801:Humans; D011247:Pregnancy; D013997:Time Factors
chemical_list: D004967:Estrogens; D003404:Creatinine; D004964:Estriol