Barkat, R., A. Rahim, A. Jiwani, S. Khan, and S. Ali. “Effect of Perceived Risk of Covid 19 on Protective Behavioral Changes Among Adult Population in Pakistan: A Web-Based Cross-Sectional Study”. Archives of Community Medicine and Public Health, vol. 7, no. 2, Apr. 2021, pp. 055-9, doi:10.17352/2455-5479.000135.