1. Multi-Scale Robotics Laboratory, ETH Zürich, Zürich, Switzerland
2. Department of Surgery, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong
3. Department of Mechanical and Automation Engineering, The Chinese University of Hong Kong, Hong Kong
4. Department of Neurosurgery, Henan Provincial People’s Hospital, Henan University People’s Hospital, School of Medicine, Henan University, Zhengzhou, China