β2-microglobulin, not muscle mass, mediates the association between eGFR discordance and mortality in CKD
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Introduction The discordance between cystatin C- and creatinine-based eGFR (eGFRdiff) predicts mortality in CKD, but what this index actually reflects remains unclear. We examined the relative contributions of several biomarkers, representing muscle mass, midd... ...
