1. National Institute for Health and Welfare, Public Health Genomics Unit and Institute for Molecular Medicine FIMM, Helsinki, Finland
2. University of Turku, Centre for Cognitive Neuroscience, Department of Psychology, Turku, Finland
3. School of Humanities and Informatics, University of Skövde, Skövde, Sweden
4. National Institute for Health and Welfare, Department of Chronic Disease Prevention, Finland
5. University of Eastern Finland, Institute for Public Health and Clinical Nutrition
6. Helsinki University Hospital, Department of Psychiatry, Helsinki, Finland