D. M. Habeeb and Zinah M. Anwer, “Descriptive, Prospective Observational Study- Studying Possible Prediction Factors for Disease Severity and Progression among a Sample of COVD 19 Patients in Iraq”, Iraqi Journal of Pharmaceutical Sciences , vol. 31, no. 2, pp. 39–49, Dec. 2022, doi: 10.31351/vol31iss2pp39-49.