1. Neuropediatric Department Children Timone University Hospital, Aix‐Marseille University Marseille France
2. Reference Center for Neuromuscular Diseases and ALS Timone University Hospital Aix‐Marseille University Marseille France
3. Aix‐Marseille University, CNRS, ISM UMR 7287 Marseille France
4. Aix‐Marseille University, UMR 7286, Medicine Faculty Marseille France
5. Aix‐Marseille University, Inserm UMR S 910, Medical Genetics and Functional Genomics Marseille France