1. Maxillofacial and Oral Surgery, 401-General Military Hospital of Athens 138, Mesogeion Avenue & Katehaki, 115 25 Athens, Greece
2. Department of Pathological Anatomy, Medical School, University of Athens, 75 M. Asias Street, 115 27 Athens, Greece
3. 417-General Military Hospital of Athens-NIMTS, 10-12 M. Petraki Street, 115 21 Athens, Greece