1. 1) Tewari M., Rai P., Singh G.B., et al: Long-term follow-up results of Nd: Yag laser treatment of premalignant and malignant (Stage I) squamous cell carcinoma of the oral cavity. J Surg Oncol 95: 281-285, 2007
2. 2) Ferlay J., Bray F., Pisani P., et al: Cancer incidence, mortality and prevalence worldwide. Version 1.0. IARC Cancer Base No5 Lyon IARC Press, 2001
3. 3) Tanaka S., Sobue T.: Comparison of oral and pharyngeal cancer mortality in five countries: France, Italy, Japan, UK and USA from WHO mortality database (1960-2000). Jpn J Clin Oncol 35: 488-491, 2005
4. Descriptive epidemiology of oral cancer in Japan. Trends and predictions of mortality and incidence.
5. Clinical analysis of oral carcinoma treated in the Department of Otolaryngology, Niigata University Hospital