1. Department of Public Health Sciences, Karolinska Institutet, Stockholm, Sweden; and Department of Public Health Analysis and Development, Public Health Agency of Sweden, Solna, Sweden
2. Department of Public Health Sciences, Karolinska Institutet, Stockholm, Sweden; and Department of Medicine Huddinge, Division of Infectious Diseases, Karolinska Institutet, Karolinska University Hospital Huddinge, Stockholm, Sweden
3. Centre for Psychiatry Research, Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden; and Stockholm Centre for Dependency Disorders, Stockholm Health Care Services, Stockholm County Council, Sweden
4. Finnish Institute for Health and Welfare, Finland