 Evaluation of renal function will be performed using blood and urine tests. In addition, specimens will be collected in a bio-repository, and tested for biomarkers of renal structural damage. Comprehensive nutritional assessment will be performed by a dietitian, along with bioelectrical impedance measurements, blood and urine tests. 24-hour urine urea nitrogen and food records will be used to estimate the protein intake of each individual. Quality of well-being will be assessed using a standardized tool such as Euro Quality of Life EQ-5D, Charlson Index, and Short Form 8 SF8 or equivalent. Relevant clinical events adherence to follow-up, death, hospitalization, renal recovery, repeat AKI episodes will be tracked throughout the study. 