1. Department of Translational Research and New Technologies in Medicine and Surgery, Section of Medical Genetics, University of Pisa, Pisa, Italy,
2. Doctoral School in Genetics Oncology and Clinical Medicine, Department of Medical Biotechnologies, University of Siena, Siena, Italy,
3. Medical Genetics Unit, Department of Laboratory Medicine, ASST Grande Ospedale Metropolitano Niguarda, Milan, Italy, and
4. NEuroMuscular Omnicentre (NEMO), ASST Grande Ospedale Metropolitano Niguarda, Milan, Italy