COVID-19-associated acute kidney injury patients treated with renal replacement therapy in the intensive care unit: a multicenter study in SAo Paulo, Brazil - Samaan, Farid; Paula, Elisa Carneiro de; Souza, Fabrizzio Batista Guimaraes de Lima; Mendes, Luiz Fernando Cardoso; Rossi, Paula Regina Gan; Freitas, Rafaela Andrade Penalva; Nakagawa, Fernando Takahashi; Maciel, Alexandre Toledo; Aranha, Sylvia; Burdmann, Emmanuel de Almeida (Plos one, 2022)