1. Department of Clinical and Movement Neurosciences Institute of Neurology, University College London London United Kingdom
2. Unit of Functional Neurosurgery, National Hospital for Neurology and Neurosurgery, Queen Square London United Kingdom
3. The Francis Crick Institute London United Kingdom
4. The Comprehensive Clinical Trials Unit, University College London London United Kingdom
5. Surrey Clinical Trials Unit, University of Surrey Guildford United Kingdom
6. Department of Clinical and Experimental Medicine University of Surrey Guildford United Kingdom
7. Parkinson's Foundation International Centre of Excellence, King's College London London United Kingdom
8. Leonard Wolfson Experimental Neurology Centre, National Hospital for Neurology and Neurosurgery Queen Square, London United Kingdom
9. Institute of Neurology University College London London United Kingdom
10. NIHR Clinical Research Facility, University College London Hospitals NHS Foundation Trust London United Kingdom
11. Institute of Nuclear Medicine, University College London Hospitals NHS Trust London United Kingdom