1. Division of Neurology Department of Medicine Ellen and Martin Prosserman Centre for Neuromuscular Diseases University Health Network University of Toronto Toronto ON Canada
2. Institute of Health Policy, Management and Evaluation Dalla Lana School of Public Health University of Toronto Toronto ON Canada
3. National Neuroscience Institute King Fahad Medical City RiyadhSaudi Arabia
4. College of Medicine Qassim University Buraidah Saudi Arabia
5. Neuromuscular Diseases Unit Department of Neurology Tel Aviv Sourasky Medical Center Sackler Faculty of Medicine Tel Aviv University Tel Aviv Israel