1. Division of NursingDepartment of Neurobiology, Care Sciences and Society, Karolinska Institutet, Stockholm, Sweden
2. Centre for Clinical Research, Dalarna, Falun, Sweden
3. Dalarna County Council, Norslund Primary Health Care Centre, Falun, Sweden
4. School of Health and Social Sciences, Dalarna University, Falun, Sweden
5. Red Cross University College of Nursing, Stockholm, Sweden
6. National Institute of Environmental MedicineKarolinska Institutet, Stockholm, Sweden
7. Department of Clinical Science and EducationSödersjukhuset, Karolinska Institutet, Stockholm, Sweden
8. Sophiahemmet University, Stockholm, Sweden
9. Department of Public Health and Caring SciencesFamily Medicine and Preventive Medicine Section, Uppsala University, Uppsala, Sweden