1. Department of Anesthesiology Uniformed Services University Bethesda Maryland USA
2. Henry M. Jackson Foundation For the Advancement of Military Medicine Rockville Maryland USA
3. School of Medicine Uniformed Services University Bethesda Maryland USA
4. Department of Anesthesiology Duke University Medical Center Durham North Carolina USA
5. Department of Orthopaedic Surgery Brooke Army Medical Center Fort Sam Houston Texas USA
6. Department of Surgery Uniformed Services University Bethesda Maryland USA
7. Department of Anesthesiology Brooke Army Medical Center Fort Sam Houston Texas USA
8. Nell Hodgson Woodruff School of Nursing Emory University Atlanta Georgia USA