acute kidney failure/dt [Drug Therapy]; albuminuria; cardiovascular disease; continuous renal replacement therapy; coronavirus disease 2019; cytokine storm; cytopathogenic effect; diabetes mellitus; drug withdrawal; hematuria; hemodialysis; human; human tissue; hypertension; immune response; immunosuppressive treatment; intensive care unit; kidney biopsy; letter; mortality; mortality rate; risk factor; sepsis; angiotensin converting enzyme 2/dt [Drug Therapy]; angiotensin receptor antagonist/dt [Drug Therapy]; dipeptidyl carboxypeptidase inhibitor/dt [Drug Therapy]; prednisolone/dt [Drug Therapy]