From the Dept. of Neurology (MDM, TL), Dept. of Psychiatry and Mental Health (CL, BBC), Hospital Egas Moniz - Centro Hospitalar de Lisboa Ocidental, Lisbon, Portugal; CEDOC, Nova Medical School/Faculdade de Ciências Médicas da Universidade Nova de Lisboa, Lisbon, Portugal (MDM, BBC); Champalimaud Foundation Center for the Unknown, Lisbon, Portugal (BBC).