2Michaelis J,Kaletsch U,Kaatsch P.Epidemiologie von Hirntumoren[epidemiology of childhood brain tumors].Zentralbl Neurochir,2000,61:80-87.
3Japan,Committee of Brain Tumor Registry.Report of Brain Tumor Registry of Japan (1969-1996).Neurol Mad Chir,2003,43(Suppl:i-vii):1-111.
4Cho KT,Wang KC,Kim SK,et al.Pediatric brain tumors:statistics of SNUH,Korea (1959-2000).Childs Nerv Syst,2002,18:30-37.
5Kaatsch P,Rickert CH,Kuhl J,et al.Population-based epidemiologic data on brain tumors in German children.Cancer,2001,92:3155-3164.
6Rickert CH,Paulus W.Epidemiology of central nervous system tumors in childhood and adolescence based on the new WHO classification.Childs Nerv Syst,2001,17:503-511.