1. Department of Brain, Repair and Rehabilitation; Institute of Neurology; University College London; Queen Square London WC1N 3BG UK
2. School of Engineering; Nazarbayev University; Astana 010000 Kazakhstan
3. School of Pharmacy and Biomolecular Sciences; University of Brighton; Brighton BN2 4GJ UK
4. Consultant in Biomaterials; Egham Surrey UK
5. School of Pharmacy and Biomolecular Science; University of Brighton; Brighton BN2 4GJ UK