1. Division of Cardiology Willis Knighton Heart Institute Shreveport Louisiana USA
2. Minneapolis Heart Institute Minneapolis Minnesota USA
3. Division of Cardiology Henry Ford Hospital Detroit Michigan USA
4. University Heartcenter Freiburg‐Bad Krozingen ‐ Bad Krozingen Germany
5. Department of Cardiology Emory University Atlanta Georgia USA
6. Department of Cardiology Columbia University New York New York USA
7. Saitama‐sekishinkai Hospiyal ‐ Sayama City Saitama Japan
8. Virginia Commonwealth University Virginia USA