For citations:

Savenkova N.D., Grigoreva O.P. Pediatric problems of stratification of the severity of stages, cardiovascular complications and renal forecast of chronic kidney disease by NKF-K / DOQI (2002) and KDIGO (2012) classifications. Nephrology (Saint-Petersburg). 2021;25(3):9-19. (In Russ.) https://doi.org/10.36485/1561-6274-2021-25-3-9-19