1 From the Academic Department of Military Surgery and Trauma (D.J.O., J.J.M., J.OJ., M.J.M.), RCDM; National Institute of Health Research (M.J.M.), Surgical Reconstruction and Microbiology Research Centre; and NHS Blood and Transplant (H.D.), and 306 Hospital Support Medical Regiment (V), Birmingham; and 16 Medical Regiment (G.N.), Merville Barracks, Colchester, United Kingdom; and US Combat Casualty Care Research Program (T.E.R.), Fort Detrick, Maryland.