COVID-19(22) Patient(20) SARS-CoV-2(17) SARS-COV-2 infection(15) kidney(15) reported(14) pediatric(14) patients(14) children(14) Atypical(12) complement(10) initial(10) Immunosuppression(9) treated(8) Pathogenesis(8) antibody(8) Trigger(8) triggered(8) Support(8) information(8) uremic syndrome(8) therapy(8) Pediatric patient(8) plasma(8) IgA nephropathy(8) Result(8) disease(8) management(8) Analysis(8) pandemic(7)