1. Research Service, Louis Stokes Cleveland Department of Veterans Affairs Medical Center, 10701 East Boulevard, Cleveland, Ohio 44106, United States
2. Department of Pathology, University Hospitals, Cleveland Medical Center, Cleveland, Ohio 44106, United States
3. Department of Microbiology and Immunology, Emory University School of Medicine Atlanta, Georgia 30322, United States
4. Research Service, Atlanta VA Medical Center, Decatur, Georgia 30033, United States
5. Wockhardt Research Centre, Aurangabad, India