Hypermethylation as a Potential Prognostic Factor and a Clue to a Better Understanding of the Molecular Pathogenesis of Medulloblastoma - Results of a Genomewide Methylation Scan - Frühwald, M C; O'Dorisio, M S; Smith, L; Dai, Z; Wright, F A; Paulus, W; Jürgens, H; Plass, C (Klinische Pädiatrie, 2001)