[1] Oxford Genet Labs, Oxford, England
[2] Genom Qual Assessment GenQA, Edinburgh, Midlothian, Scotland
[3] Dept Genet & Genome Biol, Leicester, Leics, England
[4] West Midlands Reg Genet Lab, Birmingham, W Midlands, England
[5] Ctr Hosp Univ Porto, Porto, Portugal
[6] Cambridge Univ Hosp NHS Fdn Trust, Cambridge, England
[7] Univ Montpellier, Lab Genet Rare Dis LGMR, Montpellier, France
[8] Dept Med Sci, Ferrara, Italy
[9] UCL, Dubowitz Neuromuscular Unit, London, England