1. Academic Unit of Neurology, Trinity College Dublin, Dublin, Ireland
2. Institute and Clinic for Occupational, Social and Environmental Medicine, University Hospital, LMU Munich, Munich, Germany
3. Beaumont Hospital, Dublin, Ireland
4. Department of Basic and Clinical Neuroscience, King’s College London, Maurice Wohl Clinical Neuroscience Institute, London, UK
5. Department of Neurology, King’s College Hospital, London, UK
6. UMC Utrecht, Utrecht, The Netherlands
7. ALS Center, ‘Rita Levi Montalcini’ Department of Neuroscience, University of Turin, Turin, Italy
8. Neurology 1, Azienda Ospedale Università Città della Salute e della Scienza, Turin, Italy
9. Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK
10. Department of Neuroscience, Sheffield Institute for Translational Neuroscience, University of Sheffield, Sheffield, UK
11. Neurology Department, KU Leuven, University Hospitals Leuven, Leuven, Belgium, and
12. Department of Neuroscience, KU Leuven, Leuven Brain Institute and VIB Center for Brain & Disease Research, Leuven, Belgium