1. Laboratory for Functional and Metabolic Imaging (LIFMET); Ecole Polytechnique Fédérale de Lausanne; Lausanne Switzerland
2. Unité de Neurophysiologie et Neuroimagerie; Hôpitaux Universitaires de Genève; Geneva Switzerland
3. Department of Radiology; University of Lausanne; Lausanne Switzerland
4. Department of Radiology; University of Geneva; Geneva Switzerland