1. 1 Faculty of Medicine , Rīga Stradiņš University , 16 Dzirciema Str., Rīga, LV-1007 , Latvia
2. 2 Department of Psychiatry and Narcology , Rīga Stradiņš University , 2 Tvaika Str., Rīga, LV-1002 , Latvia
3. 3 International Centre for Education and Research in Neuropsychiatry , Samara State Medical University , 89 Chapaevskaia Str., Samara, 443099 Russia
4. 4 Department of Psychiatry, Narcology, Psychotherapy and Clinical Psychology , Samara State Medical University , Samara , Russia
5. 5 3 Department of Psychiatry, School of Medicine , Aristotle University of Thessaloniki , Greece, 6 Odysseos Str., 1st Parodos, Ampelonon str., 55536 , Thessaloniki , Greece
6. 6 Mental Health Section, Research Institute, Panhellenic Medical Association , Thessaloniki , Greece
7. 7 Institute of Public Health , Rīga Stradiņš University , 9 Kronvalda Blvd, LV-1010 , Rīga , Latvia