1. Cardiovascular Division, University of Minnesota, Minneapolis, Minnesota, USA
2. Department of Vascular Medicine, Cleveland Clinic Foundation, Cleveland, Ohio, USA
3. Heart and Vascular Center, Henry Ford, Detroit, Michigan, USA
4. Department of Medicine, Allegheny Health Network, Pittsburgh, Pennsylvania, USA
5. Advanced Heart Failure and Transplant, Cleveland Clinic, Cleveland, Ohio, USA
6. Heart and Vascular Center, MetroHealth Medical Center, Cleveland, Ohio, USA
7. Advanced Heart Failure and Transplant, Allegheny Health Network, Pittsburgh, Pennsylvania, USA