1. Department of Medical and Surgical Sciences and Advanced Technologies “GF Ingrassia”, ENT Section, University of Catania, Catania, Italy
2. Department of ‘Organi di Senso’, University “Sapienza”, Rome, Italy
3. Department of Head-Neck Surgery, Otolaryngology, Head-Neck, and Oral Surgery Unit, Morgagni Pierantoni Hospital, Forlì, Italy
4. Department of Clinical and Experimental Medicine, University of Messina, Messina, Italy
5. Neonatal Intensive Care Unit, University of Catania, Catania, Italy