Affiliations: UCL Institute of Neurology, Honorary Consultant Neurologist, The National Hospital for Neurology and Neurosurgery, London, UK
Note: [] Correspondence to: Niall Quinn, Emeritus Professor of Clinical Neurology, UCL Institute of Neurology, Honorary Consultant Neurologist, The National Hospital for Neurology and Neurosurgery, Queen Square, London WC1N 3BG, UK. E-mail: [email protected]