1. Department of Microbiology and Immunology, University of Texas Medical Branch (UTMB), Galveston, Texas.
2. Metabolism Unit, Shriners Hospital for Children, Galveston, Texas.
3. Department of Surgery, University of Texas Medical Branch (UTMB), Galveston, Texas.
4. Department of Pathology, University of Texas Medical Branch (UTMB), Galveston, Texas.
5. Institute for Human Infections and Immunity, University of Texas Medical Branch (UTMB), Galveston, Texas.