The value of single specimen estrogen/creatinine ratio determination during pregnancy.
D003404:Creatinine / Q000652:urine*; D004967:Estrogens / Q000652:urine*; D005260:Female; D005315:Fetal Diseases / Q000175:diagnosis*; D006801:Humans; D008297:Male; D011247:Pregnancy
D004967:Estrogens; D003404:Creatinine