1. University of Sydney, School of Health Sciences & The Children's Hospital at Westmead Sydney Australia
2. Department of Occupational TherapyThe Children's Hospital of Philadelphia Philadelphia Pennsylvania USA
3. Department of NeurologyHospital of the University of Pennsylvania Philadelphia Pennsylvania USA
4. Fondazione IRCCSIstituto Neurologico Carlo Besta Milan Italy
5. Department of Neurology, University of IowaCarver College of Medicine Iowa City Iowa USA
6. Neuromuscular Omnicentre (NEMO)‐Fondazione Serena Onlus Genoa Italy
7. MRC Centre for Neuromuscular DiseasesUCL Queen Square Institute of Neurology London UK
8. Department of NeurologyUniversity of Rochester Rochester New York USA