T. Angkanusorn, P. Rodanant, and P. Rawdaree, “Impact of Oral Health Knowledge and Attitude on the Severity of Periodontitis among Patients with Type 2 Diabetes Mellitus: A Cross-Sectional Study: Oral Health KNWL & ATT Affecting Periodontitis Severity in T2DM”, Vajira Med J, vol. 69, no. 4, p. e274690, Aug. 2025.