1. Department of Electronic and Computer Engineering, Hong Kong University of Science and Technology, Kowloon, Hong Kong
2. School of System Design and Intelligent Manufacturing, Shenzhen Key Laboratory of Biomimetic Robotics and Intelligent Systems and the Guangdong Provincial Key Laboratory of Human-Augmentation and Rehabilitation Robotics in Universities, Southern University of Science and Technology, Shenzhen, China
3. Department of Electrical Engineering, Uppsala University, Uppsala, Sweden