1. Unit of Otolaryngology, Department of Clinical and Experimental Medicine, University of Foggia, 71122 Foggia, Italy
2. Paediatric National Healthcare System, 10135 Torino, Italy
3. General Practitioner, Local Health Department Bari, 70026 Modugno, Italy
4. Pharmaceutical Chemist, 00143 Rome, Italy
5. Department of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, 44121 Ferrara, Italy