1. Department of Physical Medicine & Rehabilitation, Faculty of Medicine Ain Shams University Cairo Egypt
2. Department of Neurology Wake Forest School of Medicine Winston‐Salem North Carolina USA
3. Department of Neurology and Clinical Neurophysiology, Donders Institute for Brain, Cognition, and Behavior Radboud University Medical Center Nijmegen The Netherlands
4. Department of Neurology, Jena University Hospital Friedrich Schiller University Jena Germany
5. Department of Physical Medicine and Rehabilitation Mayo Clinic Rochester Minnesota USA
6. Department of Neurology Austin Health and University of Melbourne Heidelberg Australia
7. Department of Neurology University Hospital Tuebingen Tuebingen Germany
8. Department of Neurology, Neuromuscular Division Duke University School of Medicine Durham North Carolina USA
9. Department of Neurology, St Josef Hospital Ruhr University Bochum Germany
10. Department of Neurology Beth Israel Deaconess Medical Center Boston Massachusetts USA
11. Neurological Institute, University Hospitals, Cleveland Medical Center Case Western Reserve University Cleveland Ohio USA
12. Department of Neurology and Neurological Sciences Stanford University Stanford California USA
13. Division of Neurology, Department of Medicine, Faculty of Medicine University of Malaya Kuala Lumpur Malaysia
14. Department of Neurology Mount Sinai School of Medicine New York New York USA
15. Neuromuscular Center Neurological Institute, Cleveland Clinic Cleveland Ohio USA
16. Department of Neurology Kantonsspital Lucerne Switzerland
17. Department of Neurology University of Berne Bern Switzerland