Convalescent Plasma Therapy for COVID-19: A Systematic Review and Meta-Analysis on Randomized Controlled Trials oleh Charalampos Filippatos, Ioannis Ntanasis-Stathopoulos, Kalliopi Sekeri, Anastasios Ntanasis-Stathopoulos, Maria Gavriatopoulou, Theodora Psaltopoulou, George Dounias, Theodoros N. Sergentanis, Evangelos Terpos