Edited by Timothy R.J. Nicholson , MBBS, BSc, MSc, PhD, MRCP, MRCPsych, Academic Clinical Lecturer, Section of Cognitive Neuropsychiatry, Institute of Psychiatry, London, UK Donald R.J. Singer , BmedBiol, MD, FRCP, FBPharmacolS, Professor of Clinical Pharmacology and Therapeutics, Fellowship of Postgraduate Medicine, London, UK