1. Section of Vascular Surgery, Department of Surgery, University of Michigan Health System, Ann Arbor
2. Division of Plastic Surgery, Department of Surgery, University of Utah, Salt Lake City
3. West Virginia School of Osteopathic Medicine, Lewisburg
4. Department of Surgery, Wayne State University School of Medicine, Detroit, Michigan
5. Office of Performance Assessment and Clinical Effectiveness, University of Michigan Health System, Ann Arbor