Avraham Zini, Czerninski, Rakefet , and Sgan-Cohen, Harold D. 2010. “Oral Cancer Over Four Decades: Epidemiology, Trends, Histology, And Survival By Anatomical Sites”. Journal Of Oral Pathology And Medicine, 39, Pp. 299 – 305. doi:10.1111/j.1600-0714.2009.00845.x.