1. Anatomy and Histology, Department of Biomedical and Biotechnological Sciences, University of Catania, I‑95123 Catania, Italy
2. Occupational Medicine, Department of Clinical and Experimental Medicine, University of Catania, I‑95123 Catania, Italy
3. Pathologic Anatomy, Department ‘G.F. Ingrassia’, University of Catania, I‑95123 Catania, Italy
4. Rovaniemi Health Centre, 96200 Rovaniemi, Finland
5. Oncologic, Clinic and General Pathology Section, Department of Biomedical and Biotechnological Sciences, University of Catania, I‑95123 Catania, Italy
6. INPS Italian National Social Security Institution, I‑95129 Catania, Italy