N. Alwahaibi, M. . Al-Maskari, B. . Al-Dhahli, H. . Al-Issaei, and S. . Al-Bahlani, “A review of the prevalence of COVID-19 in the Arab world”, J Infect Dev Ctries, vol. 14, no. 11, pp. 1238–1245, Nov. 2020.