1. Reta Lila Weston Institute, University College London, London, England
2. Centro de Estudos Egas Moniz, Hospital de Santa Maria, Lisbon, Portugal
3. Department of Clinical Pharmacology, Institut National de la Santé et de la Recherche Medicale (INSERM) and University Hospital of Toulouse, Toulouse, France4Department of Neurosciences, INSERM and University Hospital of Toulouse, Toulouse, France
4. Department of Neurology, Innsbruck Medical University, Innsbruck, Austria
5. Department of Research and Development, BIAL–Portela & Ca SA, Sao Mamede do Coronado, Portugal
6. Quintiles, Dublin, Ireland
7. Department of Research and Development, BIAL–Portela & Ca SA, Sao Mamede do Coronado, Portugal8Department of Pharmacology and Therapeutics, University Porto, Porto, Portugal