1. Department of Psychiatry; University of Helsinki and Helsinki University Central Hospital; Helsinki Finland
2. Department of Public Health Solutions; Mental Health Unit, National Institute for Health and Welfare; Helsinki Finland
3. Centre for Research Methods, Faculty of Social Sciences, University of Helsinki; Helsinki Finland
4. Institute of Clinical Medicine, University of Eastern Finland; Kuopio Finland
5. Faculty of Social Sciences, University of Tampere and Pirkanmaa Hospital District; Tampere Finland