1. Department of Neurology; Franz Tappeiner Hospital; Merano Italy
2. Department of Neurology; Christian Doppler Clinic, Paracelsus Medical University; Salzburg Austria
3. Department of Neurology University A. Avogadro; Novara Italy
4. Department of Neurological; Neuropsychological, Morphological and Movement Sciences; Section of Clinical Neurology, University of Verona; Italy