Begum, S., P. B, J. Muthu, P. V, V. K, and S. R. “Correlation of Salivary Retinol Binding Protein 4 (RBP4) Levels and Periodontal Severity in Patients With Chronic Periodontitis: Life Sciences-Health”. International Journal of Life Science and Pharma Research, vol. 12, no. SP25, Oct. 2022, pp. L128-L135, doi:10.22376/ijpbs/lpr.2022.12.6.SP25.L128-135.