1. 1Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama.
2. 2Division of Preventive Medicine, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama.
3. 3O'Neal Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, Alabama.
4. 4Center for Clinical and Translational Sciences, University of Alabama at Birmingham, Birmingham, Alabama.
5. 5Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee.
6. 6Vanderbilt Center for Immunobiology, Vanderbilt University School of Medicine, Nashville, Tennessee.
7. 7Birmingham VA Medical Center, Birmingham, Alabama.