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Quartiles of cFGF23 and iFGF23 in 79 individuals with CKD and 91 individuals without CKD. Results reported as medians with interquartile ranges. Abbreviations: cFGF23, c-terminal fibroblast growth factor 23; iFGF23, intact fibroblast growth factor 23; CKD, chronic kidney disease; HFpEF, heart failure with preserved ejection fraction; IQR, interquartile range
