1. Division of Cardiology University of Missouri Columbia Missouri USA
2. Division of Cardiology, Department of Medicine University of Washington Seattle Washington USA
3. Saint Luke's Mid America Heart Institute Kansas City Missouri USA
4. Division of Cardiology University of Missouri Kansas City Kansas City Missouri USA
5. Banner Heart Hospital Gilbert Arizona USA
6. Division of Cardiology Emory University Atlanta Georgia USA
7. Torrance Medical Center Torrance California USA
8. Wellspan Health York Pennsylvania USA