“Tumor Necrosis Alpha (tnf-α) Levels in the Human Gingival Sulcus: Rates and Factors Affecting Its Levels in Healthy Subjects”. Sana’a University Journal of Medicine and Health Sciences 17, no. 1 (October 24, 2023). Accessed June 13, 2026. https://journals.su.edu.ye/index.php/jchm/article/view/210.