Dr. L. Heiskell, Dr. B T. Olesnicky, & Dr. S. VailFrom Dr. L. Heiskell, Dr. B T. Olesnicky, & Dr. S. VailSpecial UnitsBlood ClottersMedical personnel have known for years that approximately 80 percent of combat deaths occur within 30 minutes of wounding, often because of loss of bloodJuly 31, 2004Page 1 of 1