1. Department of Neurology, Oslo University Hospital, Rikshospitalet, Oslo, Norway
2. Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
3. Letten Centre and GliaLab, Division of Physiology, Department of Molecular Medicine, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway
4. Max Planck Research Group “Molecular Neurobiology” at the Institute for Anatomy and Cell Biology, Heidelberg University, Heidelberg, Germany