1. Department of Clinical and Molecular Biomedicine, University of Catania, Catania, Italy
2. Department of Law, University of Catania, Catania, Italy
3. UOC di Medicina Interna, Edificio 4, Piano 3, AOU ‘Policlinico-V. Emanuele’, Università di Catania, Via S. Sofia 78, 95123 Catania, Italy