1 Neuroimmunology and Neuromuscular Diseases, Fondazione Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Istituto Neurologico Carlo Besta, Milan, Italy.
2 The Atkinson-Morley Neuromuscular Centre, St George's University Hospitals NHS Foundation Trust, London, United Kingdom.
3 Department of Neuromuscular Diseases, Queen Square Institute of Neurology, UCL, London, United Kingdom.
4 Department of Biomedical Sciences and Human Oncology, School of Medicine, University of Bari Aldo Moro, Policlinico, Bari, Italy.