1. Division of Cardiovascular Medicine; University of Michigan School of Medicine; Ann Arbor Michigan
2. Michigan Heart; Ann Arbor Michigan
3. Munson Medical Center; Traverse City Michigan
4. Division of Vascular Surgery; Henry Ford Health System; Detroit Michigan
5. Detroit Medical Center Cardiovascular Institute; Detroit Michigan
6. University of Michigan; Ann Arbor Michigan
7. Section of Vascular Surgery; University of Michigan School of Medicine; Ann Arbor Michigan