1. Department of Surgery, The Albert Einstein College of Medicine, Montefiore Medical Center,Bronx, New York
2. Schering-Plough Research Division, Kenilworth, New Jersey
3. Department of Anesthesiology, Centennial Medical Center, Nashville, Tennessee
4. Department of Pathology, Pritzker School of Medicine, University of Chicago, Illinois
5. Division of Vascular Surgery, Stanford University Medical School, Palo Alto, California