1. School of Electrical Engineering, Yanshan University, Qinhuangdao, China
2. Institute of Mechanical Engineering, Yanshan University, Qinhuangdao, China
3. First Hospital of Qinhuangdao, Qinhuangdao, China
4. Academy for Engineering and Technology, Fudan University, Shanghai, China
5. Department of Rehabilitation, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
6. Department of Rehabilitation, Shandong Provincial Hospital, Jinan, China