1. Department of Neurology, Centre Hospitalier Universitaire Vaudois, Lausanne, Switzerland
2. Laboratory of Functional and Metabolic Imaging, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
3. Department of Radiology, University of Lausanne, Lausanne, Switzerland
4. Department of Radiology, University of Geneva, Geneva, Switzerland
5. Brain and Mind institute, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland