on the basis of urinary ca/creatinine ( cr ) ratio obtained by the test , the 116 patients with normocalcemic nephrolithiasis were divided into 3 groups ( normocalciuric nephrolithiasis ; nn , absorptive hypercalciuria ; ah , renal hypercalciuria ; rh ) according to our criteria which were slightly modified from pak et al .
C0392525
nephrolithiasis
C0022646
renal