1. Unit of Biostatistics, Epidemiology and Public Health, Department of Statistics and Quantitative Methods, University of Milano-Bicocca, 20126 Milan, Italy
2. National Centre for Healthcare Research and Pharmacoepidemiology, University of Milano-Bicocca, 20126 Milan, Italy
3. Department of Mental Health and Addiction Services, ASST Lecco, 23900 Lecco, Italy
4. Department of Health Policy, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, 20156 Milan, Italy
5. Center of Epidemiology and Biostatistics, Polytechnic University of Marche, 60121 Ancona, Italy
6. Psychologist, Previously General Directorate for Health Prevention, Ministry of Health, 00144 Rome, Italy
7. Centre of Research on Health and Social Care Management, SDA Bocconi School of Management, Bocconi University, 20100 Milan, Italy
8. Regional Agency for Public Health, 00198 Rome, Italy
9. Department of Health Planning, Italian Health Ministry, 00144 Rome, Italy
10. Department of Mental Health and Addiction Disorders Forlì-Cesena, AUSL Romagna, 48121 Cesena, Italy
11. General Directorate of Health and Social Policies, 40127 Bologna, Italy
12. Department of Health Services and Epidemiological Observatory, Regional Health Authority, 90145 Palermo, Italy
13. Consultant for General Directorate for Welfare, 20124 Milan, Italy