1. Department of Neurology & Neurosurgery, Montreal Neurological Institute-Hospital, McGill University, Montreal, Quebec, Canada
2. Brain and Mind Centre, University of Sydney, Sydney, New South Wales, Australia
3. Department of Neurology, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
4. Department of Neurology, College of Medicine, Hanyang University, Seoul, South Korea
5. Department of Clinical Science, Neurosciences, Umeå University, Umeå, Sweden
6. ALS Centre, Department of Neuroscience “Rita Levi Montalcini”, University of Torino, Turin, Italy
7. SC Neurologia 1 U, AOU Città della Salute e della Scienza of Torino, Turin, Italy
8. Department of Neurology, UMC Utrecht Brain Center, University Medical Center Utrecht, Utrecht, The Netherlands
9. Department of Neurosciences, Laboratory for Neurobiology, KU Leuven and Center for Brain & Disease Research, VIB, Leuven Brain Institute, Leuven, Belgium
10. Department of Neurology, University Hospital Leuven, Leuven, Belgium
11. Department of Basic and Clinical Neuroscience, King's College London, Maurice Wohl Clinical Neuroscience Institute, London, UK
12. Departamento de Neurología Sur, Facultad de Medicina, Universidad de Chile & Geroscience Center for Brain Health and Metabolism, Santiago, Chile
13. The Eleanor and Lou Gehrig ALS Center, The Neurological Institute, New York, NY, USA