1. Public Health and Welfare, Finnish Institute for Health and Welfare, P.O. Box 30, FI-00271 Helsinki, Finland ().
2. Department of Education, P.O. Box 35, 40014 University of Jyväskylä, Finland ().
3. School of Health and Social Studies, JAMK University of Applied Sciences, P.O. Box 207, FI-40101 Jyväskylä, Finland ().
4. Faculty of Psychology and Educational Sciences, University of Porto and Center for Psychology at the University of Porto, Rua Alfredo Allen 4200-135 Porto, Portugal ().
5. Australian Institute of Family Studies, Level 4, 40 City Road, Southbank VIC 3006, Australia ().