1. Division of Vascular Medicine, Medical Clinic and Policlinic IV, Hospital of the Ludwig-Maximilians-University, Ziemssenstraße 5, 80336 Munich, Germany
2. Department of Cardiology I—Coronary and Peripheral Vascular Disease, Heart Failure, University Hospital, 48149 Muenster, Germany
3. Independent Researcher, 45276 Essen, Germany