1. Department of Orthodontics and Orofacial Pain; University of Catania; Catania Italy
2. Department of Maxillofacial Surgery; University of Messina; Messina Italy
3. Department of Oral Surgery; Marquette University; Milwaukee WI USA
4. Department of Surgical Sciences; Institute of Pathology and Cytopathology; University of Foggia; Foggia Italy
5. Department of Bio-Medical Sciences; Anatomy Section; University of Catania; Catania Italy
6. Division of Anatomy; Faculty of Dental Medicine; ‘Carol Davila’ University of Medicine and Pharmacy; Bucharest Romania