| http://www.w3.org/ns/prov#value | - All subjects were on normal diet and no special instructions were given to restrict food or fluid intake during the col???lection period (as 24-h urinary chemical ana???lysis was not a routine procedure in our institute).All patients were advised to avoid allopurinol, potassium citrate, thiazide and any other medi???cations known to affect study parameters seve???ral days before col
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