1. Division of Invasive Cardiology, Department of Internal Medicine, University of Szeged, 6725 Szeged, Hungary
2. Heart and Vascular Center, Semmelweis University, Határőr Str. 18, 1122 Budapest, Hungary
3. Bács-Kiskun County Hospital, 6725 Kecskemét, Hungary
4. Graz University Heart Center Graz, Medical University of Graz, 8036 Graz, Austria