1. Department of Cardiology, Bern University Hospital, University of Bern, Bern, Switzerland
2. UFR Médecine, Université de Paris, Paris, France
3. LVTS INSERM U1148, GH Bichat, Paris, France
4. Department of Cardiac Surgery and Cardiovascular Research, Dedinje Cardiovascular Institute, Belgrade, Serbia
5. Department of Cardiovascular Surgery, University Heart Center, University Hospital Freiburg, Freiburg, Germany
6. Medical Faculty of the Albert-Ludwigs-University, Freiburg, Germany