1. Department of Rehabilitation Sciences & Technology, University of Wisconsin-Milwaukee, Milwaukee, WI, USA.
2. Department of Biomedical Engineering/Mechanical Engineering, University of Wisconsin-Milwaukee, Milwaukee, WI, USA.
3. Department of Biomedical Sciences Lab Programs, University of Wisconsin-Milwaukee, Milwaukee, WI, USA.
4. Department of Medical Research, China Medical University Hospital, China Medical University, Taichung, Taiwan.