This study was performed by Kai Yu, Qingfeng Zhang, Zekun Liu, Qi Zhao, Xiaolong Zhang, Yan Wang, Zi-Xian Wang, Ying Jin, Xiaoxing Li and Ze-Xian Liu Ph. D., 
                                supervised by Rui-Hua Xu, Ph.D., M.D..
                                
                                
                                Kai Yu, Qingfeng Zhang, Qi Zhao, Xiaolong Zhang, Yan Wang, Zi-Xian Wang, Ying Jin, Xiaoxing Li, Ze-Xian Liu and Rui-Hua Xu are from 
                                
                                Sun Yat-sen University Cancer Center, 
                                
                                Building 2#20F, 651 Dongfeng East Road, 
                                
                                Guangzhou 510060, P. R. China
                                
                                
                                Zekun Liu is from 
                                
                                Wuhan Union Hospital, Tongji Medical College, 
                                
Huazhong University of Science and Technology
                                
                                1277 Jiefang Road, 
                                
                                Wuhan 430022, P. R. China
                                
                                
                                Email: liuzx AT sysucc.org.cn
                                
                                Tel/Fax: +86-20-87342025