1. Instituto de Fisiologia, Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Department of Neurosciences and Mental Health, Hospital de Santa Maria, Centro Hospitalar Universitário de Lisboa Norte, Lisbon, Portugal
2. Brain and Mind Centre, University of Sydney, and Department of Neurology, Royal Prince Alfred Hospital, Sydney, Australia
3. Department of Neurology, College of Physicians and Surgeons, Columbia University, New York, NY, USA
4. Department of Neurology, The University of Chicago, Chicago, IL, USA
5. Department of Clinical Neurology, University of Oxford, John Radcliffe Hospital, Oxford, UK, and
6. Department of Neurology, Pennsylvania State University, Hershey, PA, US