1. Department of Oncology, Southern Research Institute, Birmingham, AL 35205, USA
2. Department of Gastric Cancer Surgery, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin 300060, China
3. Nanchang University Graduate School, Nanchang 330047, China
4. Department of Radiation Oncology, Jiangxi Cancer Hospital, Nanchang 330029, China
5. Department of Economics, American University, Washington, DC 20016, USA
6. Cancer Cell Biology Program, Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, AL 35205, USA