“Comparative Study of Influenza Virus and Parainfluenza 3 Virus As Causative Agents of Upper Respiratory System in Thi-Qar Province”. University of Thi-Qar Journal of Science, vol. 9, no. 2, Dec. 2022, pp. 21-28, https://doi.org/10.32792/utq/utjsci/v9i2.899.