1. John Walton Muscular Dystrophy Research Center Newcastle University Translational and Clinical Research Institute Newcastle upon Tyne UK
2. Neuromuscular Disorders Unit, Department of Neurology, Hospital de la Santa Creu i Sant Pau Barcelona Spain
3. Centro de Investigación Biomédica en Enfermedades Raras Barcelona Spain
4. Department of Physiology and Functional Genomics University of Florida Gainesville Florida USA