1. Department of Medical Sciences, Uppsala University, Uppsala, Sweden.
2. Department of Medicine, Stanford University, Stanford, California.
3. School of Health and Social Sciences, Dalarna University, Falun, Sweden.
4. Division of Family Medicine and Primary Care, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Huddinge, Sweden.
5. Department of Public Care, Uppsala University, Uppsala, Sweden.