1. Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, United States
2. Birmingham Veterans Affairs Medical Center, Birmingham, Alabama, United States
3. Math-Science Department, Alabama School of Fine Arts, Birmingham, Alabama, United States
4. Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama, United States
5. Department of Biostatistics and Bioinformatics, Rollins School of Public Health, Emory University, Atlanta, Georgia, United States
6. Department of Veterans Affairs, Atlanta Veterans Affairs Medical Center, Decatur, Georgia, United States