Gutierrez H. Walker, Ortiz N. Hall. “Diagnostic and Prognostic Value of Gingival Fluid Examination in Patients With Catarrhal Gingivitis”. Open Journal of Physicians and Surgeons, vol. 6, no. 4, Nov. 2025, pp. 11-20, https://ojps.site/index.php/Journal/article/view/173.