title: Biological and dietary reference materials.
mesh_terms: D001317:Austria; D001530:Belgium; D002170:Canada; D005502:Food / Q000592:standards*; D005504:Food Analysis; D006077:Government Agencies; D006801:Humans; D007564:Japan; D012015:Reference Standards; D014131:Trace Elements / Q000032:analysis; D014481:United States; D014815:Vitamins / Q000032:analysis
chemical_list: D014131:Trace Elements; D014815:Vitamins