1 Guang-Zhong Yang is the Editor of Science Robotics and the Director of the Hamlyn Centre for Robotic Surgery, Imperial College London, London, UK. Email: g.z.yang@imperial.ac.uk.
2 Robert Riener is head of the Department of Health Sciences and Technology and the Sensory-Motor Systems Lab, Institute of Robotics and Intelligent Systems, ETH Zurich, and a Professor in the Medical Faculty of the University of Zurich, Zurich, Switzerland.
3 Paolo Dario is the Director of the BioRobotics Institute and a Professor of Biomedical Engineering at the Scuola Superiore Sant'Anna, Pisa, Italy.