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Diagram of cases included in the study and AKI incidence. AKI was defined and staged according to the KDIGO, modified KDIGO, and pROCK definitions. The baseline SCr was calculated based on the Schwartz formula or estimated as the NormsMax, AdmSCr and modified AdmSCr methods. AdmSCr admission serum creatinine, KDIGO Kidney Disease: Improving Global Outcome, NormsMax the upper normative value, pROCK pediatric reference change value optimized for acute kidney injury
