Arvanitidou, I.-E. Nikitakis, N.G. Georgaki, M. Papadogeorgakis, N. Tzioufas, A. Sklavounou, A., Multiple primary squamous cell carcinomas of the lower lip and tongue arising in discoid lupus erythematosus: a case report, Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology, (125), e22-e30, 2018, Mosby Year Book Inc, 2212-4403