title: Determation of 4-hydroxy-3-methoxymandelic acid (HMMA) in urine.
mesh_terms: D003124:Colorimetry; D003979:Diazonium Compounds; D006801:Humans; D014642:Vanilmandelic Acid / Q000652:urine*
chemical_list: D003979:Diazonium Compounds; D014642:Vanilmandelic Acid