1. Karolinska Institutet, Department of Clinical Sciences, Danderyd Hospital, Division of Cardiovascular Medicine, Stockholm, Sweden
2. Department of Internal Medicine, Ryhov County Hospital, Jönköping, Sweden
3. Karolinska Institutet, Department of Clinical Sciences, Danderyd Hospital, Division of Internal Medicine, Stockholm, Sweden
4. Department of Medicine, Karolinska University Hospital, Huddinge, Sweden