Bekele Chaka, Alemayehu Mekonnen, Tesfa Demilew, Yusuf Abdo, Filimona Bisrat, Abdulnasir Abagero Haji, and Negussie Deyessa. “Community-Based Assessment of People With Chronic Diseases and Conditions Worsening the Severity of COVID-19 in Addis Ababa City Administration”. The Ethiopian Journal of Health Development, vol. 35, no. 2, Oct. 2021, https://ejhd.org/index.php/ejhd/article/view/4483.