Thetay, Anshuj, Santosh Kumar, Mohammed Irfan, Rafael Lund, Khushboo Desai, Tanvi Hirani, and Jeel Sevak. “A Randomized Comparative Study of Platelet-Rich Fibrin Along With Hydroxyapatite Graft for the Treatment of 3-Walled Defects in Chronic Periodontitis”. Medicine and Pharmacy Reports (September 24, 2021). Accessed October 20, 2021. https://medpharmareports.com/index.php/mpr/article/view/1923.