1. First Cardiology Department, Hippokration General Hospital, National and Kapodistrian University of Athens, School of Medicine, Athens, Greece
2. Department of Internal Medicine, University of Cincinnati Medical Center, Cincinnati, OH, USA
3. Vascular Center Arnsberg, Germany
4. Department of Cardiology, Vascular Medicine and Pneumology, GRN Hospital, Weinheim, Germany
5. Department of Interventional Cardiology, Clinique Pasteur, Toulouse, France