Youssef, F. B., F. B. Youssef, O. Jawed, N. Omri, M. F. Hassen, S. ElAtrous, H. B. SiK Ali, and S. E. Mhamdi. “COVID-19 Infection in an Intensive Care Unit in Tunisia: Risk Factors of Mortality”. Archives of Community Medicine and Public Health, vol. 8, no. 4, Oct. 2022, pp. 135-9, doi:10.17352/2455-5479.000189.