1. Global cancer statistics, 2002;Parkin;CA Cancer J Clin,2005
2. Report of head and neck cancer registry of Japan. Clinical statistics of registered patients, 2002;Japan Society for Head and Neck Cancer Registry Committee;Jpn J Head Neck Cancer,2006
3. Trends of head and neck cancer – is it on the increase or decrease? 1. Epidemiology of head and neck cancer;Yoshino;Otolaryngology–Head and Neck Surgery (Tokyo),2004
4. Epidemiology study of malignant tumors in the oral and maxillofacial region: survey of member institutions of the Japanese Society of Oral and Maxillofacial Surgeons, 2002;Ariyoshi;Int J Clin Oncol,2008
5. Basic issues in population screening for cancer;Cole;J Natl Cancer Inst,1980