1. The Heart Hospital Baylor Plano; Plano Texas
2. Cardiopulmonary Research Science and Technology Institute; Dallas Texas
3. Emory University; Atlanta Georgia
4. University of Pennsylvania; Philadelphia Pennsylvania
5. Cedars-Sinai Medical Center; West Hollywood California
6. Morton Plant Hospital; Clearwater Florida
7. University of Washington; Seattle Washington
8. Stanford University School of Medicine; Stanford California
9. Medical City Dallas Hospital; Dallas Texas