1. National Cancer Institute;SEER Cancer Incidence Public Use Database1975–2005,2008
2. Epidemiology of brain tumors: the national survey of intracranial neoplasms;Walker;Neurology,1985
3. National Center for Health Statistics, Division of Vital Statistics, Center for Disease Control. Available at: www.edu.gov/nchs.htm (October 2001)
4. DeVita VT, Hellman S, Rosenberg SA. Cancer: principles and practice of oncology. 7th ed. Philadelphia: Lippincott Williams and Wilkins; 2005.
5. WHO Classification of Tumours of the Central Nervous System;Louis,2007