1. Finnish Institute for Health and Welfare, Department of Public Health Solutions, The Alcohol, Drugs and Addictions Unit, Helsinki, Finland
2. Finnish Institute for Health and Welfare, Department of Information Services, Health and Social Services Data and Information Management, Helsinki, Finland
3. University of Turku, Social Sciences Department of Psychology and Speech-Language Pathology, Turku, Finland
4. University of Helsinki, Department of Medicine, Helsinki, Finland