1. ALS Unit, Hospital San Rafael, Madrid, Spain;
2. Department of Neurology and Neurosurgery, Montreal Neurological Institute and Hospital, McGill University, Montreal, Canada;
3. Department of Neuroscience, University of Turin, Turin, Italy;
4. Neurological Center for Treatment and Rehabilitation, Buenos Aires, Argentina;
5. Department of Neurology, ALS Unit, Hospital Carlos III, Madrid, Spain;
6. Neurology Department, Neuron Motor Disease Clinic, Hospital JM Ramos, Buenos Aires, Argentina;
7. Neurology Department, Bellvitge Hospital-IDIBELL, Barcelona, Spain;
8. Neurology Department, Vall d’Hebron University Hospital, Vall d’Hebron Research Institute, Autonomous University of Barcelona, Barcelona, Spain;
9. NEMO Clinical Centre, Serena Onlus Foundation, Milan, Italy;
10. Neurorosario, Rosario, Argentina;
11. Department of Neurology-INSPE, San Raffaele Scientific Institute, Milan, Italy;
12. Department of Neurosciences, St. Agostino-Estense Hospital, Azienda Ospedaliero Universitaria di Modena, Modena, Italy;
13. AB Science, Paris, France;
14. Department of Pathology, Harvard Medical School and Beth Israel Deaconess Medical Center, Boston, MA, USA;
15. Department of Biology, Université Paris Sud Université Paris-Saclay CNRS UMR 8113, Ecole Normale Supérieure de Cachan, Cachan, France;
16. INSERM, CNRS, Institut Paoli-Calmettes, CRCM, Centre de Référence des Mastocytoses, Equipe Labelisée Ligue Nationale Contre le Cancer, Aix-Marseille University, Marseille, France; and
17. Imagine Institute, INSERM UMR 1163 and CNRS ERL 8254, Laboratory of Cellular and Molecular Mechanisms of Hemathological Disorders and Therapeutic Implication, Hôpital Necker, Paris, France