1. Department of Public Health, School of Medicine, University of Patras, 26500 Rio Patras, Greece
2. Psychiatric Hospital of Tripoli, 5th Km Tripolis-Kalamatas, 22100 Tripoli, Greece
3. Health Center of Erymanthia, 25015 Erymanthia, Greece
4. Department of Medical Affairs, Janssen-Cilag, 56 Eirinis Avenue, Pefki, 15121 Athens, Greece
5. Department of Health Economics, National School of Public Health, 196 Alexandras Avenue, 11521 Athens, Greece