1. Unit of Medical Genetics, Department of Medical Science, University of Ferrara, Ferrara, Italy.
2. Dubowitz Neuromuscular Centre, UCL Great Ormond Street Institute of Child Health, University College London, London, UK.
3. Université Paris-Saclay, UVSQ, Inserm, END-ICAP, Versailles, France.
4. NIHR Great Ormond Street Hospital Biomedical Research Centre, London, UK.