Alizadeh Tabari, Zahra, et al. “Effect of Non-Surgical Therapy on Receptor Activator Level of Salivary Nuclear Factor Kappa B Ligand and Osteoprotegerin in Chronic Periodontitis: A Prospective Cohort Study”. Regeneration, Reconstruction & Restoration (Triple R), vol. 5, Jan. 2021, p. e25, doi:10.22037/rrr.v5i.32784.