1. Department of Neurodegenerative Disease; UCL Institute of Neurology and National Hospital for Neurology and Neurosurgery, Queen Square; London UK
2. School of Medicine, Dentistry and Biomedical Sciences; Queen's University of Belfast Centre for Medical Education; Belfast UK
3. Institute of Neurology, Queen Square; London UK
4. Health and Social Care Library; Altnagelvin Hospital; Derry UK
5. Department of Neurology; Altnagelvin Hospital; Derry UK