K. . Iqbal et al, M. Hosein, S. Butt, and A. Razi, “Salivary Expression of HIF-1 α in Oral Submucous Fibrosis”, PJMD, vol. 10, no. 4, pp. 57–62, May 2024, doi: 10.36283/PJMD10-4/010.