Figure 1.
FGF-23 concentration in the various CKD stages (p = 0.000). * p = 0.029 CKD stage 2 vs. CKD stage 1; ** p = 0.021 CKD stage 4 vs. CKD stage 3; *** p = 0.001 CKD stage 5 vs. CKD stage 4.
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