COVID-19 AND ACUTE KIDNEY INJURY IN ELDERLY PATIENTS: A COMPARATIVE COHORT STUDY BETWEEN THE FIRST AND SECOND WAVE OF THE PANDEMIC IN BRAZIL - Yuasa, Bruna [UNESP]; Magalhaes, Luis [UNESP]; Gabriela Sousa de Oliveira, Paula [UNESP]; Yokota, Lais [UNESP]; Cardoso, Pedro [UNESP]; Zamoner, Welder [UNESP]; Balbi, Andre [UNESP]; Ponce, Daniela [UNESP] (Oxford Univ Press, 2023)