1. Department of Public Health Sciences Karolinska Institutet Stockholm Sweden
2. Department of Sport Sciences Linneaus University Kalmar Sweden
3. Swedish Radiation Safety Authority Stockholm Sweden
4. Department of Work science, Business Economics and Environmental Psychology Swedish University of Agricultural Sciences Alnarp Sweden
5. Center for Epidemiology and Community Medicine Stockholm County Council Stockholm Sweden
6. Department of Food and Nutrition and Sport Science University of Gothenburg Gothenburg Sweden
7. Section of General Practice Department of Public Health University of Copenhagen Copenhagen Denmark
8. Department of Clinical Sciences in Lund University of Lund Lund Sweden