1. The Christ Hospital Heart and Vascular Center and The Lindner Research CenterCincinnati Ohio
2. University of WashingtonWashington
3. Albert Einstein College of MedicineNew York
4. Banner University Medical Center ClinicArizon
5. Columbia UniversityNew York
6. Wellspan Health Pennsylvania
7. Advocate Heart InstituteIllinois
8. University of MissouriKansas City Missouri
9. Mid America Heart InstituteKansas City Missouri