1. Christ Hospital Heart and Vascular Center and Lindner Center for Research and Education Cincinnati Ohio
2. Belfast Health and Social Care Trust Belfast UK
3. Columbia University New York New York
4. Torrance Memorial Medical Center Torrance California
5. WellSpan York Hospital York Pennsylvania
6. San Raffaele Scientific Institute Milan Italy
7. St George's University Hospital NHS Trust London UK
8. Einstein Healthcare Network Philadelphia Pennsylvania
9. Banner University Medical Center Phoenix Arizona
10. Edward‐Elmhurst Health Naperville Illinois
11. University of Washington Seattle Washington
12. St. Luke's Mid America Heart Institute Kansas City Missouri