Gebretsadik, Heron Gezahegn, and Gedion Mulatu Akalu. “Oral Clinical Courses of Patients With Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) Infection: A Clinical Follow up (a Prospective Prevalent Cohort) Study”. Orapuh Journal 2, no. 3 (November 16, 2021): e820. Accessed June 29, 2025. https://orapuh.org/ojs/ojs-3.1.2-4/index.php/orapj/article/view/61.