[1] UCL, NIHR Gt Ormond St Hosp, Dubowitz Neuromusc Ctr, Biomed Res Ctr,Gt Ormond St Inst Child Hlth, London, England
[2] Gt Ormond Str Hosp Trust, London, England
[3] Fdn IRCCS Ist Neurol Carlo Besta, Dev Neurol Unit, Milan, Italy
[4] Columbia Univ, Dept Neurol, Irving Med Ctr, New York, NY USA
[5] Univ Oxford, Dept Paediat, MDUK Oxford Neuromusc Ctr, Oxford, England
[6] Univ Hosp Liege, Div Child Neurol, Dept Paediat, Ctr References Malad Neuromusculaires, Liege, Belgium
[7] Univ Liege, Liege, Belgium
[8] Hop Armand Trousseau, AP HP, I Mot, Inst Myol, Paris, France
[9] Harvard Med Sch, Boston Childrens Hosp, Dept Neurol, Boston, MA USA
[10] Stanford Univ, Dept Neurol, Palo Alto, CA USA
[11] Univ Libre Bruxelles, Queen Fabiola Childrens Univ Hosp, Ctr Reference Malad Neuromusculaires, Brussels, Belgium
[12] UZ Gent, Neuromusc Reference Ctr, Ghent, Belgium
[13] Sydney Childrens Hosp Network, Sydney, NSW, Australia
[14] UNSW Sydney, UNSW Med, Sydney, NSW, Australia
[15] St Jude Childrens Res Hosp, Ctr Expt Neurotherapeut, Memphis, TN USA
[16] Bambino Gesu Childrens Res Hosp IRCCS, Res Unit Neuromusc & Neurodegen Disorders, Rome, Italy
[17] Univ Freiburg, Fac Med, Med Ctr, Dept Neuropaediat & Muscle Disorders, Freiburg, Germany
[18] Med Univ Gdansk, Dept Develt Neurol, Gdansk, Poland
[19] Pirogov Russian Nat Res Med Univ, Russian Children Neuromusc Ctr, Veltischev Clin Paed Res Inst, Moscow, Russia
[20] F Hoffmann La Roche Ltd, Pharma Dev Safety, Basel, Switzerland
[21] F Hoffmann La Roche Ltd, PDMA Neurosci & Rare Dis, Basel, Switzerland
[22] Roche Prod Ltd, Welwyn Garden City, Herts, England
[23] F Hoffmann La Roche Ltd, Pharma Dev Neurol, Basel, Switzerland
[24] Catholic Univ, Paediat Neurol Inst, Rome, Italy
[25] Fdn Policlin Gemelli IRCCS, Nemo Pediat, Rome, Italy