1. Green Templeton College, University of Oxford, United Kingdom
2. Gamma Knife Centre, National Hospital for Neurology and Neurosurgery, London, United Kingdom
3. Gray Laboratory, CRUK/MRC Oxford Institute for Radiation Oncology, University of Oxford, United Kingdom
4. Wellcome/EPSRC Centre for Interventional and Surgical Sciences, University College London, United Kingdom
5. Centre for Medical Image Computing, University College London, United Kingdom