1. Departments of Microbiology; University Station; Birmingham Alabama 35294 U.S.A.
2. Institute of Dental Research; University Station; Birmingham Alabama 35294 U.S.A.
3. Comprehensive Cancer Center; University Station; Birmingham Alabama 35294 U.S.A.
4. Pathology; University Station; Birmingham Alabama 35294 U.S.A.
5. Medicine; University Station; Birmingham Alabama 35294 U.S.A.
6. Division of Clinical Immunology and Rheumatology; The University of Alabama in Birmingham
7. Birmingham Veteran's Administration Hospital; University Station; Birmingham Alabama 35294 U.S.A.