Pulse Therapy With Corticosteroids and Intravenous Immunoglobulin in the Management of Severe Tocilizumab-Resistant COVID-19: A Report of Three Clinical Cases

采用皮质类固醇和静脉注射免疫球蛋白进行冲击疗法治疗托珠单抗耐药的重症 COVID-19：三例临床病例报告