1. Department of Neurology Mayo Clinic Rochester Minnesota USA
2. Cleveland Clinic Lou Ruvo Center for Brain Health Las Vegas Nevada USA
3. Instituto de Neurociencias Buenos Aires Affiliated Buenos Aires University Buenos Aires Argentina
4. Parkinson and Movement Disorders Section Institute of Neurology, Hospital de Clínicas Montevideo Uruguay
5. Department of Neurology, Samsung Medical Center Sungkyunkwan University School of Medicine Seoul South Korea
6. Neurology Unit, Department of Medicine, Faculty of Clinical Sciences, College of Medicine University of Lagos Lagos Nigeria
7. National Neuroscience Institute, King Fahad Medical City Riyadh Saudi Arabia
8. Department of Neurology, Faculty of Medicine Ain Shams University Cairo Egypt
9. Department of Neurology Fukuoka University Fukuoka Japan
10. Neurology Unit King Fahad Medical Military Complex Dhahran Saudi Arabia
11. Neurology Department Hospital Universitario Burgos Burgos Spain