Guangkai Gao1, Jiaxin Du2, Yuxin Yin3, Bing Yan1, Qing Sun4,5. 1. Dept. of Military and Special Medicine, No. 971 Hospital of the PLA Navy, No. 22 Minjiang Rd. Shinan District, Qingdao, 266071, China. 2. Dept. of Neurology, No 96604 Unit Hospital of the PLA, Lanzhou, 730030, China. 3. Vascular Access Specialist Team, No. 971 Hospital of the PLA Navy, Qingdao, 266071, China. 4. Dept. of Military and Special Medicine, No. 971 Hospital of the PLA Navy, No. 22 Minjiang Rd. Shinan District, Qingdao, 266071, China. dr.qingsun@smmu.edu.cn. 5. Dept. Special Medicine, School of Basic Medicine, Qingdao University, Qingdao, 266071, China. dr.qingsun@smmu.edu.cn.