kumar, Akhil, și colab. „Clinicopathological Study of CK19 Expression in Head and Neck Squamous Cell Carcinoma and Its Association with Tumor Grading: A Cross-Sectional Study”. Student’s Journal of Health Research Africa, vol. 7, nr. 3, septembrie 2026, p. 11, https://doi.org/10.51168/9fyrr742.