1. Applied Parkinson’s Research Group, University of Plymouth, Faculty of Health: Medicine, Dentistry and Human Sciences, Plymouth, United Kingdom
2. Queen Square MS Centre, Department of Neuroinflammation, UCL Institute of Neurology, London, UK
3. Department of Uro-Neurology, National Hospital for Neurology and Neurosurgery, UCL Institute of Neurology, Queen Square, London, United Kingdom
4. MRC Clinical Trials Unit at UCL, University College London, London, United Kingdom