1. Department of Internal Medicine III RWTH Aachen University Hospital, RWTH Aachen Aachen Germany
2. Cardiovascular Research Laboratory, Division of Cardiology, Pulmonology and Vascular Medicine, Medical Faculty Heinrich‐Heine‐University Düsseldorf Germany
3. Department of Biochemistry, Cardiovascular Research Institute Maastricht Maastricht University Maastricht The Netherlands
4. Department of General, Visceral and Transplantation Surgery RWTH Aachen University Hospital, RWTH Aachen Aachen Germany