Sery, Yasmin, Marwa Hegab, Khaled Keraa, Ahmed El Barbary, and Mona Darhous. “Platelet-Rich Fibrin Versus Connective Tissue Graft Using Vestibular Incision Subperiosteal Tunnel Access (VISTA) Technique in Multiple Gingival Recessions: Randomized Controlled Trial”. Perio J 6, no. 1 (May 28, 2022): 12–25. Accessed December 4, 2022. https://perioj.com/ojs/index.php/perioj/article/view/2022-a2.