1. Unit of Psychiatry, Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
2. Fondazione Policlinico Universitario Agostino Gemelli Istituto di ricovero e cura a carattere scientifico (IRCCS), Rome, Italy
3. Section of Psychiatry, Department of Neuroscience, Università Cattolica del Sacro Cuore, Rome, Italy
4. Department of Psychiatry, Dalhousie University, Halifax, Nova Scotia, Canada