Sery, Y., M. Hegab, K. Keraa, A. El Barbary, and M. 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, vol. 6, no. 1, May 2022, pp. 12-25, doi:10.26810/perioj.2022.a2.