1. Fundació ACE, Institut Català de Neurociències Aplicades, Barcelona, Spain
2. Neurology Department, Hospital Universitari Vall d'Hebron, Universitat Autònoma de Barcelona, Spain
3. Nuclear Medicine Department, Hospital Universitari Vall d'Hebron, Barcelona, Spain
4. Psychiatry Department, Hospital Universitari Vall d'Hebron, Universitat Autònoma de Barcelona, Spain
5. Department of Neurology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
6. Department of Psychiatry, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
7. Department of Psychology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA