1. NAVER LABS Europe, France
2. Department of Mechanical and Mechatronics Engineering, University of Waterloo, Canada
3. CNRS-AIST JRL (Joint Robotics Laboratory), National Institute of Advanced Industrial Science and Technology (AIST), Japan
4. Faculty of Engineering, The University of Tokyo and CNRS-AIST JRL (Joint Robotics Laboratory), National Institute of Advanced Industrial Science and Technology (AIST), Japan
5. Department of Medical and Robotic Engineering Design, Faculty of Advanced Engineering, Tokyo University of Science, Japan