Mohammed, F. ., and A. Sahib. “ Astra Zeneca (ChAdOx1nCoV-19) and Sinopharm (BBIBP-CorV) Vaccines in Eliciting Humoral Immunity in a Sample of Vaccinated Population from Iraq”. Bangladesh Journal of Medical Science, vol. 22, no. 3, June 2023, pp. 553-6, doi:10.3329/bjms.v22i3.65323.