1. Department of Medicine, Sahlgrenska University Hospital at Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
2. Department of Clinical Chemistry and Transfusion Medicine, Sahlgrenska University Hospital at Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
3. Functional Area of Medicine, Karolinska University Hospital, Stockholm, Sweden
4. Department of Internal Medicine, Solna, Karolinska Institutet, Stockholm, Sweden