1. Centre for Medical Image Computing, Department of Medical Physics and Biomedical Engineering, University College London, Gower Street NW1 2HE, London, UK
2. Functional Imaging in Neuropsychiatric Disorders (FIND) Lab, Department of Neurology and Neurological Sciences, Stanford University School of Medicine, Stanford, CA 94304-5777, USA
3. Epione Research Project, Université Côte d'Azur, BP 93 06 902, Inria Sophia Antipolis, France
4. UCL Institute of Neurology, Queen Square WC1N 3BG, London, UK