1. Department of Cardiology; Paracelsus Medical University; Salzburg Austria
2. Division of Cardiology, Angiology, Pneumology and Intensive MedicalCare; Department of Internal Medicine I; Friedrich-Schiller-University Jena; Jena Germany
3. Division of Cardiology, Pulmonology, and Vascular Medicine; Medical Faculty; University Duesseldorf; Duesseldorf Germany
4. Department of Laboratory Medicine; Paracelsus Medical University; Salzburg Austria
5. Division of Cardiology; Department of Medicine; Karolinska Institutet; Karolinska University Hospital; Stockholm Schweden