1. Naval Medical Research Unit San Antonio, Combat Casualty Care Directorate, 3650 Chambers Pass JBSA Fort Sam Houston, San Antonio, TX 78234.
2. Department of Pulmonary Critical Care, Walter Reed National Military Medical Center, 8901 Wisconsin Avenue, Bethesda, MD 20889.
3. Department of Cardiothoracic Surgery, Naval Medical Center Portsmouth, 620 John Paul Jones Circle, Portsmouth, VA 23708.
4. Department of Vascular Surgery, Naval Medical Center San Diego, 34800 Bob Wilson Dr, San Diego, CA 92134.