Relationship of renal function tests in newborn infants to gestational age.
D003404:Creatinine / Q000097:blood / Q000652:urine; D005260:Female; D005865:Gestational Age; D006801:Humans; D007231:Infant, Newborn; D007677:Kidney Function Tests; D008297:Male; D012964:Sodium / Q000097:blood / Q000652:urine
D012964:Sodium; D003404:Creatinine