1 From the Division of Trauma and General Surgery (J.L.S.), Department of Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania; Department of Surgery, Denver Health Medical Center (E.E.M., W.L.B.); and Department of Surgery,University of Colorado (R.C.M.), Denver, Colorado; Department of Surgery, University of California-San Diego (R.C.), San Diego; Department of Surgery, University of California-San Francisco (J.W.D.), Fresno; and Department of Surgery, University of California-Davis Medical Center (D.V.S.), Sacramento, California; Department of Surgery, University of Tennessee (M.C.), Memphis, Tennessee; Department of Surgery, Southwest Washington Medical Center (R.K.-J.), Vancouver, Washington; Department of Surgery, University of Florida (F.A.M.), Gainesville, Florida; Department of Surgery, Medical College of Virginia (A.M.), Richmond, Virginia.