1. 1. Waldron CA, Shafer WG (1975) Oral carcinoma in situ. Oral Surg Oral Med Oral Pathol 39, 227-238.
2. 2. Waldron CA (1970) Oral epithelial tumors. In: Thoma’s oral pathology, Vol II, 6th ed, Gorlin RJ, Goldman HM eds, CV Mosby, St Louis, 825.
3. 3. Gale N, Pilch BZ, Sidransky D, Naggar AE, Westra W, Califano J et al. (2005) Epithelial precursor lesions. In: World Health Organization classification of tumours. Pathology and genetics of head and neck tumours, Barnes L, Eveson JW, Reichart P, Sidransky D eds, IARC Press, Lyon, 177-179.
4. 4. Moll R, Divo M, Langbein L (2008) The human keratins: biology and pathology. Histochem Cell Biol 129, 705-733.
5. 5. Kobayashi T, Maruyama S, Cheng J, Ida-Yonemochi H, Yagi M, Takagi R et al. (2010) Histopathological varieties of oral carcinoma in situ: diagnosis aided by immunohistochemistry dealing with the second basal cell layer as the proliferating center of oral mucosal epithelia. Pathol Int 60, 156-166.