title: [Foreword].
authors.affiliation: Centre national de référence maladies neuromusculaires rares, hôpital Pitié-Salpêtrière, 47 boulevard de l'Hôpital, Paris cedex 13, France. Jean-marc.leger@psl.aphp.fr
authors.forename: J-M
authors.initials: JM
authors.lastname: Léger
mesh_terms: D006801:Humans; D009462:Neurology; D010523:Peripheral Nervous System Diseases / Q000473:pathology*