Yilmaz, Ibrahim, Bulent Bilir, Mustafa Dogan, Numan Karaarslan, and Hanefi Ozbek. 2022. “Evaluation of Inflammatory and Biochemical Markers in COVID-19 Patients Treated With Tocilizumab Alone or With the Combination of Tocilizumab and Convalescent Plasma Transfusion”. Annals of Medical Research 29 (7):770-76. http://www.annalsmedres.org/index.php/aomr/article/view/4231.