Fouladvand, T., A. Pirzadeh, K. Isazadehfar, and A. Alipour. “Evaluating Diagnostic Value of Clinical Symptoms and Signs for Chronic Sinusitis by CT-Scan in Patients Admitted to Ardabil City Hospital, Iran”. International Journal of Advances in Medicine, vol. 6, no. 3, May 2019, pp. 590-3, doi:10.18203/2349-3933.ijam20192233.