1. Division of Human Mechanical Systems and Design Graduate School of Engineering Hokkaido University Sapporo Japan
2. Department of Bioengineering, Faculty of Engineering Imperial College London London UK
3. State Key Laboratory of Bioelectronics Jiangsu Provincial Key Laboratory of Remote Measurement and Control School of Instrument Science and Engineering Southeast University Nanjing China
4. Division of Mechanical and Aerospace Engineering Faculty of Engineering Hokkaido University Sapporo Japan