Hassan, Sandy Shabaan, Iman M. Aboushady, and Gihane Gharib Madkour. 2019. “Effect of Periodontal Surgery on Tissue Plasminogen Activator and Plasminogen Activator Inhibitor Type-1 Gene Expression in Gingival Tissues of Periodontitis Patients: A Controlled Before-And-After Study”. Perio J 3 (1):7-17. https://doi.org/10.26810/perioj.2019.a2.