1. Department of Neurosurgery; Bern University Hospital; Bern Switzerland
2. Department of Neurology; Gui de Chauliac Hospital; Montpellier University Medical Center; Montpellier France
3. Team “Brain Plasticity; Stem Cells and Glial Tumors”; Institute for Neuroscience of Montpellier; INSERM U1051; Hospital Saint Eloi; CHU Montpellier; Montpellier France
4. Department of Neurosurgery; Gui de Chauliac Hospital; Montpellier University Medical Center; Montpellier France