1 Department of Neurology, Hospital de Santo António, Centro Hospitalar do Porto, Portugal. Electronic address: u12104@chporto.min-saude.pt.
2 Department of Neurology, Hospital de Santo António, Centro Hospitalar do Porto, Portugal; Unit for Multidisciplinary Research in Biomedicine, ICBAS, University of Porto, Portugal.
3 Department of Neurology, Hospital de Santo António, Centro Hospitalar do Porto, Portugal.
4 Unit for Multidisciplinary Research in Biomedicine, ICBAS, University of Porto, Portugal.
5 John Radcliffe Hospital, University of Oxford, United Kingdom.