1. Department of “Scienze Mediche; Chirurgiche e tecnologie Avanzate - G. F. Ingrassia”, University of Catania, Endocrine Surgery Unit, “Policlinico-Vittorio Emanuele” Hospital; Catania Italy
2. Department of General Surgery and Senology Unit; “Policlinico-Vittorio Emanuele” Hospital; Catania Italy
3. Department of Endocrine Surgery; “Policlinico-Vittorio Emanuele” Hospital; Catania Italy