American Association of Neurological Surgeonswebsite. Disponible en: http://www.aans.org/.
Conn's Current Therapy 2002. 54th edition. WB Saunders Company; 2002.
Fox M. Lucky Man: A Memoir. New York: Hyperion; 2002.
National Institute of Neurological Disorders and Strokewebsite. Disponible en: http://www.ninds.nih.gov/.
Parkinson's Disease Foundationwebsite. Disponible en: http://www.pdf.org.