1. INSERM U1037, Center for Cancer Research of Toulouse, Toulouse, France
2. Faculty of Pharmaceutical Sciences, University of Toulouse III Paul Sabatier, Toulouse, France
3. Department of Biostatistics, IUCT-Oncopole, Toulouse, France
4. Department of Neurosurgery, Johns Hopkins University, Baltimore, Maryland, USA
5. Department of Radiotherapy, IUCT-Oncopole, Toulouse, France
6. Laboratory of Oncogenetic, IUCT-Oncopole, Toulouse, France