[1] Novartis Gene Therapies Inc, Bannockburn, IL USA
[2] Novartis, Dublin, Ireland
[3] UCL Gt Ormond St Inst Child Hlth, Dev Neurosci Res & Teaching Dept, Dubowitz Neuromuscular Ctr, London, England
[4] NIHR Gt Ormond St Hosp Biomed Res Ctr, London, England
[5] Gt Ormond St Hosp NHS Fdn Trust, London, England