Chosen by Anthony S. DavidDavid, Anthony S.Author informationProfessor of Cognitive Neuropsychiatry, PO Box 68, Institute of Psychiatry, De Crespigny Park, Denmark Hill, London SE5 8AF, UKBritish Journal of Psychiatry 183:p 265-267, September 2003.Copyright © 2003 The Royal College of Psychiatrists