M.Hussein, A., H. Majeed, N. Majeed, N. Ali, D. Saeed, and N. Ali. “An Overview of Signs and Symptoms to Determine Coronavirus and Omicron Patients in Primary Care and Hospitals”. Cihan University-Erbil Scientific Journal, Vol. 8, no. 1, Feb. 2024, pp. 8-17, doi:10.24086/cuesj.v8n1y2024.pp8-17.