Hadi, Furaq Hussain, Iman Jabbar Kadhim, and Falah Abdulhasan Deli. “Clinical Features and Upper Airway Symptoms in Association With Severity and Outcome in Patients With COVID-19”. Journal of Contemporary Medical Sciences 8, no. 2 (April 26, 2022). Accessed May 24, 2022. https://jocms.org/index.php/jcms/article/view/1206.