1. Department of Surgery, University of Colorado Health Sciences Center, Denver, Colorado
2. Divisions of Vascular Medicine University of Grenoble, Grenoble, France
3. Divisions of Vascular Surgery, University of Grenoble, Grenoble, France
4. Hautklinik LKH, University of Graz, Graz, Austria
5. Department of Surgery, Morristown Memorial Hospital, Morristown, New Jersey
6. Department of Surgery, the University of California, San Diego, La Jolla, California