“RESULTS … po assium citrate an … ch grass sh owed a significant reduction in the total number of stones (-1.0 +/- 0.2 vs. 0.0 +/- 0.2 stones) and in the …), as well as a statistically significant reduction of uric acid urinary excretion (-164.7 +/- 45.3 vs -38 +/- 42 mg/24 h).”