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Participant inclusion diagram. Abbreviations: AASK, African American Study of Kidney Disease and Hypertension; APOL1, Apolipoprotein L1; CRIC, Chronic Renal Insufficiency Cohort Study; Cys C, cystatin C; ESKD, end-stage kidney disease; SCR, serum to creatinine ratio; UPCR, urinary protein-creatinine ratio.
