| Newark Beth Isreal Medical Center |
| Newark, New Jersey, United States, 07112 |
| Duke University Medical Center |
| Durham, North Carolina, United States, 27710 |
| Cleveland Clinic Foundation |
| Cleveland, Ohio, United States, 44195 |
| University of Cincinnati |
| Cincinnati, Ohio, United States, 45219 |
| Allegheny General Hospital |
| Pittsburgh, Pennsylvania, United States, 15212 |
| Baylor University Medical Center |
| Dallas, Texas, United States, 75226 |
| University of Texas/St. Paul Medical Center |
| Dallas, Texas, United States, 75390 |
| Texas Heart Institute |
| Houston, Texas, United States, 20345 |
| Herz-und Diabeteszentrum Nordrhein-Westfalen |
| Gergstrab, Bad Oeynhausen, Germany, 32545 |
| Deutsches Herfzzentrum Berlin |
| Augustenburger Platz, Berlin, Germany, 13353 |
| Harefield Hospital |
| Harefield, Middlesex, United Kingdom, UB96JH |