1 The First Clinical Medical College of Lanzhou University, No.199 Donggang West Road, Lanzhou, 730000, Gansu, China.
2 Department of Oncology, The First Hospital of Lanzhou University, No.1 Donggang West Road, Lanzhou, 730000, Gansu, China.
3 Department of Oncology, The First Hospital of Lanzhou University, No.1 Donggang West Road, Lanzhou, 730000, Gansu, China. Electronic address: ldyy_lingxl@Lzu.edu.cn.