Author information:
(1)Department of Neurology, Radboud University Medical Center, Nijmegen, the 
Netherlands.
(2)Department of Neurology, Ohio State University Wexner Medical Center, 
Columbus, Ohio.
(3)Department of Neurology, University of Kansas Medical Center, Kansas City, 
Kansas.
(4)Department of Physiology, David Geffen School of Medicine, University of 
California, Los Angeles, Los Angeles, California.
(5)Assistance Publique-Hôpitaix de Paris, Sorbonne Université, INSERM, Service 
of Neuro-Myology and UMR 974, Institute of Myology, University Hospital 
Pitié-Salpêtrière, Paris, France.
(6)Department of Neurology, University of Rochester, Rochester, New York.
(7)MRC Centre for Neuromuscular Diseases, Department of Neuromuscular diseases, 
UCL Queen Square Institute of Neurology, United Kingdom.
(8)Department of Neurorehabilitation Sciences, Casa Cura Policlinico, Milan, 
Italy.
(9)Department of Biomedical Sciences for Health, University of Milan, Milan, 
Italy.
(10)Neurorehabilitation Unit, University of Milan, NEuroMuscular Omnicentre 
(NEMO), Fondazione Serena Onlus, Milan, Italy.
(11)Department of Neurology and Neurotherapeutics, UT Southwestern Medical 
Center, Dallas, Texas.