1. Department of interventional Cardiology, Thoraxcenter, Cardiovascular Institute, Erasmus University Medical Center, 3000 CA Rotterdam, The Netherlands
2. Department of Interventional Cardiology, Jagiellonian University Medical College, Institute of Cardiology, St. John Paul II Hospital, 31-202 Krakow, Poland
3. Division of Cardiology and Structural Heart Diseases, Medical University of Silesia in Katowice, 40-055 Katowice, Poland
4. Department of Interventional Cardiology, Imelda Hospital, 2820 Bonheiden, Belgium
5. Cardiology Division, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02115, USA