1. Minneapolis Heart Institute and Minneapolis Heart Heart Institute Foundation, Abbott Northwestern Hospital, Minneapolis, MN, USA
2. Division of Invasive Cardiology, Second Department of Internal Medicine and Cardiology Center, University of Szeged, Szeged, Hungary
3. North Oaks Health System, Hammond, LA, USA
4. Aswan Heart Centre, Magdi Yacoub Foundation, Aswan, Egypt
5. Division of Cardiology, VCU Pauley Heart Center, Virginia Commonwealth University, Richmond, VA, USA