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.