About the Authors

Aurélie Chabanon

Roles Data curation, Methodology, Project administration, Visualization, Writing – original draft, Writing – review & editing

Affiliation Institute of Myology, GH Pitié Salpêtrière, Paris, France

Andreea Mihaela Seferian

Roles Investigation, Resources, Writing – review & editing

Affiliation Institute of Myology, GH Pitié Salpêtrière, Paris, France

Aurore Daron

Roles Investigation, Resources, Writing – review & editing

Affiliation Centre de Référence des Maladies Neuromusculaires, CHU de Liège, Belgium

Yann Péréon

Roles Investigation, Resources, Writing – review & editing

Affiliation Centre de Référence Maladies Neuromusculaires Atlantique-Occitanie-Caraïbes, Hôpital Hôtel-Dieu, Nantes, France

Claude Cances

Roles Investigation, Resources, Writing – review & editing

Affiliations Centre de Référence des Maladies Neuromusculaires, Hôpital des Enfants, Toulouse, France, Unité de neurologie pédiatrique, Hôpital des Enfants, Toulouse, France

Carole Vuillerot

Roles Investigation, Resources, Writing – review & editing

Affiliation Service de rééducation pédiatrique infantile”L’Escale”, Hôpital Mère Enfant, CHU-Lyon, Lyon, France

Liesbeth De Waele

Roles Investigation, Resources, Writing – review & editing

Affiliations Department of Pediatric Neurology, University Hospitals Leuven, Leuven, Belgium, Department of Development and Regeneration, KU Leuven Kulak Kortijk, Kortrijk, Belgium

Jean-Marie Cuisset

Roles Investigation, Resources, Writing – review & editing

Affiliations Centre de Référence des Maladies Neuromusculaires, Hôpital Roger Salengro, Lille, France, Service de Neuropédiatrie, Hôpital Roger Salengro, Lille, France

Vincent Laugel

Roles Investigation, Resources, Writing – review & editing

Affiliation Neuropédiatrie/INSERM CIC 1434, CHU Strasbourg Hautepierre, Strasbourg, France

Ulrike Schara

Roles Investigation, Resources, Writing – review & editing

Affiliation Paediatric neurology and neuromuscular center, University of Essen, Essen, Germany

Teresa Gidaro

Roles Investigation, Resources, Writing – review & editing

Affiliation Institute of Myology, GH Pitié Salpêtrière, Paris, France

Stéphanie Gilabert

Roles Investigation, Writing – review & editing

Affiliation Institute of Myology, GH Pitié Salpêtrière, Paris, France

Jean-Yves Hogrel

Roles Conceptualization, Data curation, Methodology, Resources, Writing – review & editing

Affiliation Institute of Myology, GH Pitié Salpêtrière, Paris, France

Pierre-Yves Baudin

Roles Resources

Affiliation Consultants for Research in Imaging and Spectroscopy (CRIS), Tournai, Belgium

Pierre Carlier

Roles Investigation, Methodology, Resources, Writing – review & editing

Affiliation Institute of Myology, GH Pitié Salpêtrière, Paris, France

Emmanuel Fournier

Roles Data curation, Investigation, Methodology, Writing – review & editing

Affiliation Institute of Myology, GH Pitié Salpêtrière, Paris, France

Linda Pax Lowes

Roles Data curation, Methodology, Resources, Writing – review & editing

Affiliation Center for Gene Therapy, Nationwide Children's Hospital, Columbus, Ohio, USA

Nicole Hellbach

Roles Methodology, Resources, Writing – review & editing

Affiliation Roche Pharmaceutical Research and Early Development, Roche Innovation Center, Basel, Switzerland

Timothy Seabrook

Roles Conceptualization, Funding acquisition, Methodology, Supervision, Writing – review & editing

Affiliation Roche Pharmaceutical Research and Early Development, Roche Innovation Center, Basel, Switzerland

Elie Toledano

Roles Conceptualization, Funding acquisition, Methodology, Supervision, Writing – review & editing

Affiliation Institut Roche, Paris, France

Mélanie Annoussamy

Roles Conceptualization, Formal analysis, Funding acquisition, Methodology, Project administration, Supervision, Writing – review & editing

Affiliation Institute of Myology, GH Pitié Salpêtrière, Paris, France

Laurent Servais

Roles Conceptualization, Funding acquisition, Investigation, Methodology, Resources, Supervision, Writing – review & editing

l.servais@institut-myologie.org

Affiliations Institute of Myology, GH Pitié Salpêtrière, Paris, France, Centre de Référence des Maladies Neuromusculaires, CHU de Liège, Belgium, Service de Pédiatrie, CHU de Liège, Liège, Belgium

the NatHis-SMA study group

Membership of the NatHis-SMA study group is provided in the Acknowledgments.

Competing Interests

CV has received travel grants from Allergan and Roche for participation at meetings and has consultancy activities for Biogen and F. Hoffmann-La Roche; LV has served on scientific advisory board for Biogen and F. Hoffmann-La Roche; US has served on scientific advisory boards for Biogen, Novartis and F. Hoffmann-La Roche; JYH is co-inventor of the MyoGrip and MyoPinch devices; JYH and LS are co-inventors of the MoviPlate device; LPL is co-inventor of the ACTIVE system; PYB is employee of CRIS; TS, NH and ET are employees of Roche Group; LS is co-inventor of the ActiMyo device and has served on scientific advisory boards for AveXis, Biogen and F. Hoffmann-La Roche. This does not alter our adherence to PLOS ONE policies on sharing data and materials.