Michael G Hanna is Director of the UCL Institute of Neurology, University College London and professor in clinical neurology and consultant neurologist at the National Hospital for Neurology and Neurosurgery, Queen Square, London, and also Director of the Medical Research Council (MRC) Centre for Neuromuscular Disease. He has published over 100 peer-reviewed papers in neurology, authored 15 book chapters and one book in clinical neurology. He serves as editor of the journal of Neurology, Neurosurgery, and Psychiatry.and is co-author of the textbook Tutorials in Differential Diagnosis, 4e.