title: The oxalate:phosphate ratio in urinary tract calculi by infrared revised analysis.
mesh_terms: D006801:Humans; D010070:Oxalates / Q000032:analysis*; D019815:Oxalic Acid; D010710:Phosphates / Q000032:analysis*; D013055:Spectrophotometry, Infrared; D014545:Urinary Calculi / Q000032:analysis*
chemical_list: D010070:Oxalates; D010710:Phosphates; D019815:Oxalic Acid