1. Nordic School of Public Health NHV Box 12133 40242 Gothenburg Sweden
2. Section of Social Medicine, Department of Public Health and Community Medicine University of Gothenburg Box 435 40530 Gothenburg Sweden
3. Division of Drug Research/Clinical Pharmacology, Department of Medical and Health Sciences, Faculty of Health Sciences Linköping University 58183 Linköping Sweden
4. Department of Clinical Pharmacology County Council of Östergötland 58185 Linköping Sweden
5. Centre for Applied Biostatistics Occupational and Environmental Medicine Sahlgrenska Academy at the University of Gothenburg Box 100 40530 Gothenburg Sweden
6. Futurum Academy for Health and Care Jönköping County Council Hus B4, Länssjukhuset Ryhov 55185 Jönköping Sweden