1. Division of Family Medicine, Department of Neurobiology, Care Science and Society, Karolinska Institutet, Huddinge, Sweden;
2. Academic Primary Healthcare Centre, Stockholm County Council, Huddinge, Sweden;
3. Department of Medical Sciences, Cardiovascular Epidemiology, Uppsala University, Uppsala, Sweden;
4. Department of Emergency Medicine, Karolinska University Hospital, Stockholm, Sweden;
5. Department of Internal Medicine, Karolinska Institutet, Stockholm, Sweden;
6. School of Health and Social Studies, Dalarna University, Falun, Sweden;
7. Center for Primary Health Care Research, Lund University, Malmö, Sweden