1. Medical Genetics Unit (A.A., C.T., R.S., A.F., F.G.), S. Anna University Hospital, Ferrara.
2. Cardiology Unit (C.B., A.B., M. Bertini, D.M., G.C.C., R.F.), S. Anna University Hospital, Ferrara.
3. Neurology Unit (E.S.), S. Anna University Hospital, Ferrara.
4. Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, S. Orsola-Malpighi University Hospital (M. Biffi\).
5. Maria Cecilia Hospital, GVM Care & Research, Cotignola, Italy (G.C.C., R.F.).
6. Dubowitz Neuromuscular Unit, University College London, United Kingdom (A.F.).