title: Diurnal variations of serum and urine creatine and creatinine.
mesh_terms: D000328:Adult; D002940:Circadian Rhythm; D003401:Creatine / Q000097:blood* / Q000652:urine*; D003404:Creatinine / Q000097:blood* / Q000652:urine*; D006801:Humans
chemical_list: D003404:Creatinine; D003401:Creatine