1. Georgia Cancer Center, Augusta University, Augusta, Georgia, USA
2. Current/Present address: Institute for Biomedical Sciences, Georgia State University, Atlanta, Georgia, USA
3. Department of Oncology and Surgery, General Hospital of Ningxia Medical University, Yinchuan, Ningxia Province, PR China
4. Hematology/Oncology, Georgia Cancer Center, Augusta University, Augusta, Georgia, USA
5. Department of Biochemistry and Molecular Biology, Augusta University, Augusta, Georgia, USA
6. Experimental Transplantation and Immunology Branch, National Cancer Institute, Bethesda, Maryland, USA