Tessa Kliest, Ruben P.A. Van Eijk, Ammar Al-Chalabi, Alberto Albanese, Peter M. Andersen, Maria Del Mar Amador, Geir BrÅthen, Veronique Brunaud-Danel, Lev Brylev, William Camu, Mamede De Carvalho, Cristina Cereda, Hakan Cetin, Delia Chaverri, Adriano Chiò, Philippe Corcia, Philippe Couratier, Fabiola De Marchi, Claude Desnuelle, Michael A. Van Es, JesÚs Esteban, Massimiliano Filosto, Alberto GarcÍa Redondo, Julian Grosskreutz, Clemens O. Hanemann, Trygve HolmØy, Helle HØyer, Caroline Ingre, Blaz Koritnik, Magdalena Kuzma-Kozakiewicz, Thomas Lambert, Peter N. Leigh, Christian Lunetta, Jessica Mandrioli, Christopher J. Mcdermott, Thomas Meyer, Jesus S. Mora, Susanne Petri, MÓnica Povedano, Evy Reviers, Nilo Riva, Kit C.B. Roes, Miguel Á. Rubio, FranÇois Salachas, Stayko Sarafov, Gianni SorarÙ, Zorica Stevic, Kirsten Svenstrup, Anette Torvin MØller, Martin R. Turner, Philip Van Damme, Lucie A.G. Van Leeuwen, Luis Varona, Juan F. VÁzquez Costa, Markus Weber, Orla Hardiman, Leonard H. Van Den Berg, Department of Neurology, Rudolf Magnus Institute of Neuroscience, University Medical Centre Utrecht, Maurice Wohl Clinical Neuroscience Institut, King‘s College London, King's College Hospital (KCH), Department Neurological Sciences, Milan University, IRCCS Humanitas Clinical Institute, Rozzano, M, Umeå University, CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Université de Lille, Ministry of Healthcare of Russian Federation, Department of Neurology, Montpellier CHU, Gui De Chauliac Hospital, Montpellier, Université de Lisbonne, Medizinische Universität Wien = Medical University of Vienna, Hospital Universitario La Paz, Università degli studi di Torino = University of Turin (UNITO), Centre de compétence de la Sclérose Latérale Amyotrophique [CHRU Tours] (SLA CHRU Tours), Centre Hospitalier Régional Universitaire de Tours (CHRU Tours), Epidémiologie des Maladies Chroniques en zone tropicale (EpiMaCT), CHU Limoges-Institut d'Epidémiologie Neurologique et de Neurologie Tropicale-Institut National de la Santé et de la Recherche Médicale (INSERM)-OmégaHealth (ΩHealth), Université de Limoges (UNILIM)-Université de Limoges (UNILIM), Service de Neurologie [CHU Limoges], CHU Limoges, Centre référent Sclérose Latérale Amyotrophique et autres maladies du motoneurone [CHU Limoges] (SLA CHU Limoges), Neurology Clinic, University Hospital 'Maggiore della Carità', Novara, Hôpital Pasteur [Nice] (CHU), Centro de Diagnóstico de Enfermedades Moleculares, Dpto. Biol. Mol. Centro de Biología Molecular-SO UAM-CSIC. Universidad Autónoma Madrid, Campus Cantoblanco, Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Car, University of Brescia, Lubeck University Hospital, Peninsula Schools of Medicine and Dentistry, Plymouth University, University of Oslo (UiO), Akershus University Hospital [Lørenskog], Telemark Hospital Trust [Skien, Norway], Karolinska Institutet, Department of Neurology, Karolinska University Hospital [Stockholm], University Medical Centre Ljubljana [Ljubljana, Slovenia] (UMCL), Departement de Neurology (MEDICAL UNIVERSITY OF WARSAW), Medical University of Warsaw - Poland, University Hospitals of North Midlands NHS Trust, Royal Stoke Hospital, Stoke-on-Trent, United Kingdom., University of Sussex, University of Modena and Reggio Emilia, Department of Biomedical Sciences, Department of Neuroscience, Academic Neurology Unit, University of Sheffield, Sant Rafael Hospital, Department of Neurology, Hannover Medical School, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat, University of Barcelona, Leuven University Hospitals, Division of Neuroscience, San Raffaele Scientific Institute, San Raffaele Scientific Institute, Milan, Italy, Radboud University Medical Center [Nijmegen], IMIM-Hospital del Mar, Generalitat de Catalunya, Medical University of Sofia [Bulgarie], Université de Padoue, Institute of Neurology, Clinical Center of Serbia, University of Belgrade, Belgrade, University of Belgrade [Belgrade], University of Copenhagen = Københavns Universitet (UCPH), Aarhus University Hospital, University of Oxford, Nuffield Department of Clinical Neurosciences, Oxford, UK, University Hospitals Leuven [Leuven], Servicio de Neurología, Hospital de Cruces, Barakaldo, Vizcaya, Neurology Service, Hospital Universitario La Fe, Valencia, Cantonal Hospital St Gallen (KSSG), and Department of Neurology, The Adelaide and Meath Hospital, Trinity College Dublin