Assessing the Relationship of Patient Reported Outcome Measures With Functional Status in Dysferlinopathy : A Rasch Analysis Approach - Mayhew, Anna G. (The John Walton Muscular Dystrophy Research Centre. Translational and Clinical Research Institute. Newcastle University and Newcastle Hospitals NHS Foundation Trust) ; James, Meredith K. (The John Walton Muscular Dystrophy Research Centre. Translational and Clinical Research Institute. Newcastle University and Newcastle Hospitals NHS Foundation Trust) ; Moore, Ursula (The John Walton Muscular Dystrophy Research Centre. Translational and Clinical Research Institute. Newcastle University and Newcastle Hospitals NHS Foundation Trust) ; Sutherland, Helen (The John Walton Muscular Dystrophy Research Centre. Translational and Clinical Research Institute. Newcastle University and Newcastle Hospitals NHS Foundation Trust) ; Jacobs, Marni (Pediatrics. Epidemiology and Biostatistics. George Washington University) ; Feng, Jia (Center for Translational Science. Division of Biostatistics and Study Methodology. Children's National Health System) ; Lowes, Linda Pax (The Abigail Wexner Research Institute at Nationwide Children's Hospital) ; Alfano, Lindsay N. (The Abigail Wexner Research Institute at Nationwide Children's Hospital) ; Muni Lofra, Robert (The John Walton Muscular Dystrophy Research Centre. Translational and Clinical Research Institute. Newcastle University and Newcastle Hospitals NHS Foundation Trust) ; Rufibach, Laura E. (The Jain Foundation) ; Rose, Kristy (The Children's Hospital at Westmead. The University of Sydney) ; Duong, Tina (Lucile Salter Packard Children's Hospital at Stanford. Neurology) ; Bello, Luca (Department of Neuroscience. University of Padova) ; Pedrosa-Hernández, Irene (Hospital de la Santa Creu i Sant Pau (Barcelona, Catalunya)) ; Holsten, S. (Neuroscience Institute. Carolinas Neuromuscular/ALS-MDA Center. Carolinas HealthCare System) ; Sakamoto, C. (Department of Physical Rehabilitation. National Center Hospital. National Center of Neurology and Psychiatry Tokyo) ; Canal, Aurélie (Institut de Myologie. AP-HP. GH Pitié-Salpêtrière) ; Sánchez-Aguilera Práxedes, N. (Hospital Universitario Virgen del Rocío (Sevilla, Andalusia)) ; Thiele, S. (Department of Neurology. Friedrich-Baur-Institute. Ludwig-Maximilians-University of Munich) ; Siener, C. (Department of Neurology. Washington University School of Medicine) ; Vandevelde, Bruno (Service des Maladies Neuromusculaire et de la SLA. Hôpital de La Timone) ; DeWolf, Brittney (Cooperative International Neuromuscular Research Group. Children's National Health System) ; Maron, E. (ELAN-PHYSIO. Praxis für Physiotherapie Maron) ; Gordish-Dressman, Heather (George Washington University) ; Hilsden, H. (The John Walton Muscular Dystrophy Research Centre. Translational and Clinical Research Institute. Newcastle University and Newcastle Hospitals NHS Foundation Trust) ; Guglieri, M. (The John Walton Muscular Dystrophy Research Centre. Translational and Clinical Research Institute. Newcastle University and Newcastle Hospitals NHS Foundation Trust) ; Hogrel, J.Y. (Institut de Myologie. AP-HP. GH Pitié-Salpêtrière) ; Blamire, Andrew (Magnetic Resonance Centre. Institute for Cellular Medicine. Newcastle University) ; Carlier, Pierre G. (Pitié-Salpêtrière University Hospital) ; Spuler, S. (Charite Muscle Research Unit. Experimental and Clinical Research Center. A Joint Cooperation of the Charité Medical Faculty and the Max Delbrück Center for Molecular Medicine) ; Day, John W. (Stanford University School of Medicine) ; Jones, K.J. (The Children's Hospital at Westmead. The University of Sydney) ; Bharucha-Goebel, Diana (National Institutes of Health (Bethesda, Estats Units d'Amèrica)) ; Salort-Campana, E. (Service des Maladies Neuromusculaire et de la SLA. Hôpital de La Timone) ; Pestronk, Alan (Washington University School of Medicine) ; Walter, M.C. (Department of Neurology. Friedrich-Baur-Institute. Ludwig-Maximilians-University of Munich) ; Paradas, C. (Instituto de Biomedicina de Sevilla) ; Stojkovic, T. (Institut de Myologie. AP-HP. GH Pitié-Salpêtrière) ; Mori-Yoshimura, Madoka (National Center of Neurology and Psychiatry Tokyo) ; Bravver, Elena (Neuroscience Institute. Carolinas Neuromuscular/ALS-MDA Center. Carolinas HealthCare System) ; Diaz-Manera, Jordi (Institut d'Investigació Biomèdica Sant Pau) ; Pegoraro, Elena (University of Padova) ; Mendell, J. R. (The Abigail Wexner Research Institute at Nationwide Children's Hospital) ; Jain COS Consortium, None (The Abigail Wexner Research Institute at Nationwide Children's Hospital) ; Straub, V. (The John Walton Muscular Dystrophy Research Centre. Translational and Clinical Research Institute. Newcastle University and Newcastle Hospitals NHS Foundation Trust)