Alzain, M. A., N. E. Elsser, C. O. Asweto, M. M. Alsese, M. I. Humaida, A. Kassar, and M. O. Abdelaziz. “Knowledge, Attitude, and Practice towards COVID-19 Prevention: A Survey of Sudanese People”. International Journal Of Community Medicine And Public Health, vol. 8, no. 10, Sept. 2021, pp. 4734-41, doi:10.18203/2394-6040.ijcmph20213769.