1. Allergy and Respiratory Disease, Department of Internal Medicine, University of Genoa, Genoa, Italy,
2. Muscular and Neurodegenerative Disease Unit, University of Genoa and G. Gaslini Institute, Genoa, Italy
3. Unione Italiana Lotta alla Distrofia Muscolare (UILDM), Sezione di Genova, Italy
4. Allergy and Respiratory Disease, Department of Internal Medicine, University of Genoa, Genoa, Italy
5. Servizio di Biometria e Statistica-Direzione Scientifica, IRCCS Fondazione Policlinico San Matteo, Pavia, Italy