In order to evaluate the role of idiopathic hypercalciuria (IH) in causing hematuria, nephrolithiasis and recurrent urinary tract infections we studied two groups of children for idiopathic hypercalciuria. 1) Patients group: children with hematuria, nephrolithiasis and recurrent urinary tract infections (n=452). 2) Control group: children with no urinary tract problem (n=100). In control group ...