Taher Al barzin, Ruqaya Muhammed Ghareeb, Shler Ghafour Raheem, Pinar Khalid Khudhur, Rahim Abdulkarimi, Esmaeil Mohammadnejad, and Amir Tabatabaee. “Interleukin-6 Role in the Severity of COVID-19 and Intensive Care Unit Stay Length”. Cellular and Molecular Biology 66, no. 6 (September 30, 2020): 15–18. Accessed October 23, 2021. https://www.cellmolbiol.org/index.php/CMB/article/view/3610.