1. Department of Cardiology and Angiology, University Hospital of Giessen and Marburg , Klinikstraße 33, 35392 Giessen , Germany
2. Department of Cardiology, Klinikum Oldenburg , Rahel- Straus-Straße 10 26133 Oldenburg , Germany
3. Department of Internal Medicine, St. Johannes-Hospital , Johannesstraße 9-13, 44137 Dortmund , Germany
4. German Center for Cardiovascular Research (DZHK), partner site Rhine-Main , Benekestr. 2 - 8 61231 Bad Nauheim , Germany
5. Department of Cardiology, Herz-Kreislauf-Zentrum Rotenburg a.d.F , Heinz-Meise-Straße 100 36199 Rotenburg a. d. Fulda , Germany