1. Advanced Heart and Lung Disease; Baylor University Medical Center; Dallas Texas
2. Cardiovascular Division; Medical University of South Carolina; Charleston South Carolina
3. Cardiovascular Division; University of Michigan; Ann Arbor Michigan
4. Cardiac Surgery Dvision; Northwestern University; Chicago Illinois
5. Section of Heart Failure and Cardiac Transplantation; St. Vincent's Heart Center; Indianapolis Indiana
6. Division of Cardiology; Sarver Heart Center; University of Arizona; Tucson Arizona