Role of Stem Cells and Stem Cell Markers in Oral Potentially Malignant Disorders and Malignant Transformation: A Systematic Review. - Piyarathne, Nadisha S.; Nawarathna, Gayani S.; Wijesingha, W. J.; Abeyasinghe, Udari; Hettiarachchi, P. V. Kalani; Colvin, Gerald A. (Stem Cells International, 2026)