[1] Uz Brussel, Dept Neurosurg, Brussels, Belgium
[2] Az Sint Lucas, Dept Radiotherapy, Ghent, Belgium
[3] GhDC, Dept Med Oncol, Charleroi, Belgium
[4] CHU ULG, Dept Med Oncol, Liege, Belgium
[5] ZNA Middelheim, Dept Med Oncol, Antwerp, Belgium
[6] Erasmus Hosp, Dept Pathol, Brussels, Belgium
[7] Erasmus Hosp, Dept Pathol, Brussels, Belgium
[8] Uz Brussel, Dept Med Oncol, Brussels, Belgium
[9] CHU, Dept Neurosurg, Charleroi, Charleroi, Belgium