1 Department of Neurology and Stroke Unit, San Camillo de' Lellis General Hospital, Rieti, Italy.
2 Neurological Section, Neuro-epidemiology Unit, SMDN, Centre for Cardiovascular Medicine and Cerebrovascular Disease Prevention, Sulmona, L'Aquila, Italy.
3 Division of Molecular Genetics, Department of Human Genetics, Punjabi University, Patiala, India.
4 Neurological Clinic, Department of Experimental and Clinical Medicine, Marche Polytechnic University, Ancona, Italy.
5 Department of Neurology, University of New Mexico, Albuquerque, NM, USA.