Prof. Antonio Federico: Full professor of Neurology and Director Unit Clinical Neurology and Neurometabolic Diseases, Medical School, University of Siena, Siena, Italy. Chairman of the Scientific Committee of the European Academy of Neurology. President of Neuromediterraneum Forum. Italian delegate at World Federation of Neurology and at European Union of Specialists (Neurology Section). Past-President of Italian Society of Neurology. Editor in Chief of Neurological Sciences, Springer Verlag. Author of more 400 articles in the main neurological Journals.