title: [Study of the influence of conditions during urine collection on measurement of the major constituents of urinary calculi].
mesh_terms: D002118:Calcium / Q000652:urine*; D002951:Citrates / Q000494:pharmacology; D019343:Citric Acid; D004492:Edetic Acid / Q000494:pharmacology; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008274:Magnesium / Q000652:urine*; D010758:Phosphorus / Q000652:urine*; D014527:Uric Acid / Q000652:urine*; D014545:Urinary Calculi / Q000652:urine*
chemical_list: D002951:Citrates; D014527:Uric Acid; D010758:Phosphorus; D019343:Citric Acid; D004492:Edetic Acid; D008274:Magnesium; D002118:Calcium