1. Department of Surgery, Hospital Universitario San Ignacio–Pontificia, Universidad Javeriana, Crra 7 N. 40-62, Bogota, Colombia
2. Department of Surgery, Robert Wood Johnson Medical School/UMDNJ, 1 RWJ Place, Box 19 New Brunswick, NJ 08903-0019
3. Div. of Trauma and Surgical Critical Care, 1800 NW 10th Ave., Suite T-227, Miami, FL 33136