[1] Univ Catania, Sect Anat Pathol, Dept GF Ingrassia, Santa Sofia 87 St, I-95123 Catania, Italy
[2] Univ Messina, Sect Pathol Anat, Dept Human Pathol, I-98100 Messina, Italy
[3] Univ Catania, Div Anat & Histol, Dept Biomed Sci, I-95124 Catania, Italy
[4] Univ Catania, Sect Mol Biomed, Dept Biomed Sci, I-95124 Catania, Italy
[5] Univ Hosp Policlin Vittorio Emanuele, Radiodiagnost & Radiotherapy Unit, Catania, Italy
[6] Univ Catania, Dept Ophthalmol, Catania, Italy