1. Center for Clinical Research Dalarna, Uppsala University, Falun, Sweden
2. Primary Health Care Center Britsarvet-Grycksbo, County of Dalarna, Falun, Sweden
3. Department of Neurobiology, Division of Family Medicine and Primary Care, Care Sciences and Society, Karolinska Institutet, Huddinge, Sweden
4. School of Health and Social Studies, Dalarna University, Falun, Sweden
5. Center for Clinical Research, Uppsala University, Västmanland County Hospital, Västerås, Sweden
6. Department of Clinical Physiology, Västmanland County Hospital, Västerås, Sweden