1. Department of Neurobiology, Care Sciences and Society (NVS), Family Medicine and Primary Care Unit, Karolinska Institute , Alfred Nobels allé 23, 141 52 Huddinge , Sweden
2. Center for Clinical Research Dalarna, Uppsala University , Lasarettsvägen 10, 79182 Falun , Sweden
3. Department of Clinical Sciences, Lund University , Malmö , Sweden
4. School of Health and Social Studies, Dalarna University , Falun , Sweden