1 Servicio de Psiquiatría, Hospital Universitario de La Princesa, Madrid, Spain. Electronic address: vromero@salud.madrid.org.
2 Department of Epidemiology, Columbia University Mailman School of Public Health, New York, United States; New York State Psychiatric Institute, New York, United States.
3 Department of Epidemiology, Columbia University Mailman School of Public Health, New York, United States; Centro de Investigación Biomédica en Red Salud Mental (CIBERSAM).