Washington, DC : Borden Institute, Walter Reed Army Medical Center ; Falls Church, Va. : Office of the Surgeon General, U.S. Army ; Fort Sam Houston, Tex. : U.S. Army Medical Dept. Center and School ; Fort Detrick, Frederick, MD. : U.S. Army Medical Research and Materiel Command ; Bethesda, Md. Uniformed Services University of the Health Sciences, 1998-1999