1. Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu, China
2. Department of Neurosurgery, The Second People's Hospital of Zhanjiang, Zhanjiang, Guangdong, China
3. Key Laboratory of Chronobiology of Health Ministry, Basic and Forensic School, Sichuan University, Chengdu, China
4. Department of Geriatrics, the third hospital of mianyang, mianyang, Sichuan, China
5. Chengdu University of Information Technology, Chengdu, China