1. 1Department of Biotherapy and National Clinical Research Center for Geriatrics, Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China.
2. 2Department of Neurosurgery, Affiliated Hospital of Chengdu University, Chengdu, Sichuan, China.
3. 3School of Medical and Life Sciences, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China.
4. 4Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China.
5. 5Department of Medical Oncology, Thomas Jefferson University, Philadelphia, Pennsylvania.
6. 6Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania.