title: The value of single-specimen estriol-creatinine determinations during pregnancy.
mesh_terms: D003404:Creatinine / Q000652:urine*; D004964:Estriol / Q000652:urine*; D005260:Female; D005865:Gestational Age; D006801:Humans; D008431:Maternal-Fetal Exchange; D011247:Pregnancy; D013048:Specimen Handling
chemical_list: D003404:Creatinine; D004964:Estriol