title: Plasma urea concentrations in the general population: comparison with 'hospital normal values'.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D008875:Middle Aged; D012494:Sampling Studies; D014508:Urea / Q000097:blood*
chemical_list: D014508:Urea