For citations:

Efremova E.V., Shutov A.M., Efremov I.M., Midlenko V.I. Using the modified Charlson comorbidity index to predict the risk of death in elderly and senile patients with chronic kidney disease. Nephrology and Dialysis. 2022;24(2):349-356. (In Russ.) https://doi.org/10.28996/2618-9801-2022-2-349-356