
Keywords: عملکرد کلیه کاهش می یابد; Calcitriol; chronic kidney disease (CKD); heart failure (HF); incident HF; death; Health ABC; 1,25-dihydroxyvitamin D; 25-hydroxyvitamin D; 24,25 dihydroxyvitamin D; vitamin D metabolite ratio (VMR); kidney function decline; elderly; disease progression;