Acute kidney injury(5) COVID-19(4) Hemodialysis(4) dose(4) Patient(4) patients(4) SARS-CoV-2(4) coronavirus disease 19(3) BNT162b2(3) COVID-19 vaccine(3) Humoral response(3) Vaccine(3) Antibody titer(3) acute respiratory distress syndrome(3) determine(3) response(3) Pfizer-BioNTech(2) marker(2) humoral(2) Novel coronavirus disease 19(2) BNT162b2 vaccine(2) IgG levels(2) severe acute respiratory syndrome-CoV-2(2) resulting(2) sustained(2) COVID-19 virus(2) booster dose(2) booster(2) observations(2) adverse effect(2)