[1] Osped Belcolle, Med Genet Unit, Viterbo, Italy
[2] Univ Cattolica Sacro Cuore, Inst Med Genet, Rome, Italy
[3] King Faisal Specialist Hosp & Res Ctr, Dept Genet, Riyadh 11211, Saudi Arabia
[4] Inst Neurol, Sobell Dept Motor Neurosci & Movement Disorders, London WC1N 3BG, England
[5] Osp Belcolle, Inst Neuroradiol, Viterbo, Italy
[6] Osp Belcolle, Neuroimaging Unit, Viterbo, Italy
[7] Med Univ Lubeck, Sect Clin & Mol Neurogenet, Dept Neurol, D-23538 Lubeck, Germany