[1]
W. Issa , Y. and M. Salih, S. 2024. Evaluating the Effectiveness of Pfizer, AstraZeneca, and Sinopharm Vaccines Against COVID-19 in Iraq: A Cross-Sectional Study of Vaccine Efficacy and Symptom Severity. Journal of Madenat Alelem University College. 16, 1 (May 2024), 11-21.