1. Department of Neurosciences and Movement Sciences, Section of Medicine, Faculty of Sciences and Medicine University of Fribourg Fribourg Switzerland
2. Department of Neurosurgery, Neurosurgery Clinic University Hospital of Lausanne Lausanne Switzerland
3. Neuroscience Research Novartis Institute for BioMedical Research Basel Switzerland
4. Brain Research Institute University of Zürich Zürich Switzerland
5. Department of Biology ETH Zurich Zürich Switzerland