title: Normal levels of urinary delta-aminolevulinic acid measured by a new method.
mesh_terms: D000293:Adolescent; D002648:Child; D002940:Circadian Rhythm; D005069:Evaluation Studies as Topic; D005260:Female; D006801:Humans; D007564:Japan; D007982:Levulinic Acids / Q000652:urine*; D008297:Male; D008403:Mass Screening; D008722:Methods; D009549:Nigeria; D013548:Sweden; D014481:United States
chemical_list: D007982:Levulinic Acids