Name	Location	Role	Contribution
Gian Luca Vita	Department of Clinical and Experimental Medicine and Centro Clinico Nemo Sud, University of Messina, Messina, Italy	MD	Clinical support and coordination among the team
Emilio Albamonte	Neurorehabilitation Unit, University of Milan, Neuromuscular Omnicentre Clinical Center, Niguarda Hospital, Milan	MD	Clinical support and coordination among the team
Marina Pedemonte	Center of Experimental and Translational Myology, IRCCS Istituto Giannina Gaslini, Genoa, Italy	MD	Clinical support and coordination among the team
Noemi Brolatti	Center of Experimental and Translational Myology, IRCCS Istituto Giannina Gaslini, Genoa, Italy	MD	Clinical support and coordination among the team
Giulia Norcia	Centro Clinico Nemo, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy	PT	Performed the assessments
Lavinia Fanelli	Centro Clinico Nemo, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy	PT	Performed the assessments
Nicola Forcina	Centro Clinico Nemo, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy	PT	Performed the assessments
Sara Carnicella	Centro Clinico Nemo, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy	PT	Performed the assessments
Adelina Carlesi	Unit of Neuromuscular and Neurodegenerative Disorders, Department of Neurosciences, IRCCS Bambino Gesù Children's Hospital, Rome, Italy	PT	Performed the assessments
Annamaria Bonetti	Unit of Neuromuscular and Neurodegenerative Disorders, Department of Neurosciences, IRCCS Bambino Gesù Children's Hospital, Rome, Italy	PT	Performed the assessments
Giulia Colia	Unit of Neuromuscular and Neurodegenerative Disorders, Department of Neurosciences, IRCCS Bambino Gesù Children's Hospital, Rome, Italy	PT	Performed the assessments
Vincenzo Di Bella	Department of Clinical and Experimental Medicine and Centro Clinico Nemo Sud, University of Messina, Messina, Italy	PT	Performed the assessments
Gloria Ferrantini	Centro Clinico Nemo, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy	MD	Clinical support and coordination among the team
Diletta Rossi	Centro Clinico Nemo, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy	Study nurse	Data entry and clinical support
Antonella Longo	Unit of Neuromuscular and Neurodegenerative Disorders, Department of Neurosciences, IRCCS Bambino Gesù Children's Hospital, Rome, Italy	Study nurse	Data entry and clinical support
Simona Lucibello	Centro Clinico Nemo, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy	MD	Clinical support and coordination among the team
Katia Agata Patanella	Institute of Neurology, Department of Neurosciences, Catholic University, Rome, Italy.	MD	Clinical support and coordination among the team
Chiara Bravetti	Centro Clinico Nemo, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy	Study nurse	Data entry and clinical support
Michela Catteruccia	Unit of Neuromuscular and Neurodegenerative Disorders, Department of Neurosciences, IRCCS Bambino Gesù Children's Hospital, Rome, Italy	MD	Clinical support and coordination among the team
Daniela Leone	Centro Clinico Nemo, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy	MD	Clinical support and coordination among the team
Beatrice Berti	Centro Clinico Nemo, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy	MD	Clinical support and coordination among the team
Concetta Palermo	Centro Clinico Nemo, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy	MD	Clinical support and coordination among the team
Tim Estilow	Department of Occupational Therapy, The Children's Hospital of Philadelphia, Pennsylvania.	PT	Performed the assessments
Donnielle Rome‐Martin	Departments of Neurology and Pediatrics, Columbia University Irving Medical Center, New York, USA	PT	Performed the assessments
Elizabeth Maczek	Department of Neurology, Boston Children's Hospital, Harvard Medical School, Boston, MA	PT	Performed the assessments
Courtney Dias	Department of Neurology, Boston Children's Hospital, Harvard Medical School, Boston, MA	PT	Performed the assessments
Alessandra Di Bari	Neurorehabilitation Unit, University of Milan, Neuromuscular Omnicentre Clinical Center, Niguarda Hospital, Milan	Study nurse	Data entry and clinical support
Amelia Signorino	Department of Clinical and Experimental Medicine and Centro Clinico Nemo Sud, University of Messina, Messina, Italy	PT	Data entry and clinical support
Alexis Levine	Department of Neurology, Boston Children's Hospital, Harvard Medical School, Boston, MA	Coordinators	Data entry and clinical support
Nancy Videon	Departments of Neurology and Pediatrics, Columbia University Irving Medical Center, New York, USA	Coordinators	Data entry and clinical support
Aixa Rodriguez	Nemours Children’s Hospital, University of Central Florida College of Medicine, Orlando, USA	Coordinators	Data entry and clinical support
Julia Balashkina	Nemours Children’s Hospital, University of Central Florida College of Medicine, Orlando, USA	Coordinators	Data entry and clinical support
Katharine Hagerman	Departments of Neurology and Pediatrics, Stanford University School of Medicine, Stanford, CA, United States of America	Coordinators	Data entry and clinical support
Richard Gee	Departments of Neurology and Pediatrics, Stanford University School of Medicine, Stanford, CA, United States of America.	PT	Performed the assessments
Bill Martens	Neuromuscular Disease Center, Strong Memorial Hospital, University of Rochester, Rochester, NY	IT team	Provided IT support, reports, and descriptive analysis
Felice Catania	Astir s.r.l., Milan, Italy.	IT team	Provided IT support, reports, and descriptive analysis