1. Second Department of Neurology, Attikon University Hospital, National and Kapodistrian University of Athens, School of Medicine, Greece (G.T.).
2. Department of Neurology, The University of Tennessee Health Science Center, Memphis (G.T.).
3. Division of Neurology, McMaster University/Population Health Research Institute, Hamilton, ON, Canada (A.H.K.).
4. Neuroscience Section, Department of Applied Clinical Sciences and Biotechnology, University of L’Aquila, Italy (R.O., S.S.).