Shrestha, S., Shrestha, S. M., Pradhan, A., & Aryal, S. (2018). Platelet Rich Fibrin and Bone Graft in the Treatment of Intrabony Defect in Periodontitis Patients. Journal of Nepalese Society of Periodontology and Oral Implantology, 2(2), 49–55. https://doi.org/10.3126/jnspoi.v2i2.23614