1. SDU Robotics, The Maersk Mc-Kinney Moller Institute, University of Southern Denmark, Odense, Denmark
2. Departments of Cognitive Robotics, Delft University of Technology, Delft, The Netherlands
3. Department of Biomechanical Engineering, Delft University of Technology, Delft, The Netherlands
4. Department of Biomechanical Engineering, University of Twente, Enschede, NB, The Netherlands
5. Institute for Anthropomatics and Robotics, Karlsruhe Institute of Technology, Karlsruhe, Germany
6. Department of Medical and Robotic Engineering Design, Tokyo University of Science, Tokyo, Japan