1. Department of Mechanical and Biomedical Engineering, City University of Hong Kong, Hong Kong, China
2. Stroke Biological Recovery Laboratory, Spaulding Rehabilitation Network Research Institute, Spaulding Rehabilitation Hospital, Harvard Medical School, Charlestown, MA, USA
3. Shenzhen Institute of Geriatrics, Shenzhen, China
4. School of Mechanical Engineering, Guangxi University of Science and Technology, Liuzhou, China
5. Mingkai Smart Medical Robot Co., LTD, Shenzhen, China
6. Department of Mechanical and Automation Engineering, The Chinese University of Hong Kong, Hong Kong, China
7. School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou, China
8. School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou, China