Al-Ameri AM. Role of IL6 antagonist, tocilizumab in treating Covid 19; a systematic review. Karbala J M [Internet]. 2021 Feb. 2 [cited 2024 Nov. 21];13(2):2384-9. Available from: https://mail.journals.uokerbala.edu.iq:8443/index.php/kj/article/view/819