1. Department of Pediatrics, San Salvatore Hospital, University of L’Aquila, L’Aquila, Italy
2. Acute and Emergency Paediatric and General Paediatric Operative Unit, Policlinico Vittorio Emanuele Hospital, University of Catania, Catania, Italy
3. Pediatric Neurology and Muscular Diseases Unit, DINOGMI-Department of Neurosciences, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health, University of Genoa, “G. Gaslini” Institute, Genova, Italy