1. Karolinska Institutet; Department of Medicine; Stockholm Sweden
2. Karolinska University Hospital; Department of Medicine, Unit of Cardiology; N305, 17176 Stockholm Sweden
3. Karolinska Institutet; Department of Clinical Science and Education, Södersjukhuset; Stockholm Sweden
4. Department of Cardiology and Department of Medicine and Health Sciences; Linköping University; Linköping Sweden