1. Department of Oncology and Experimental Center, The Affiliated Hospital of Chengde Medical University, Chengde, China
2. Cancer Center, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
3. Department of Cell Biology, Basic Medicine College of Chengde Medical University, Chengde, China
4. Department of Immunology, Basic Medicine College of Chengde Medical University, Chengde, China