1. Department of Oral and Maxillofacial Surgery, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
2. Department of Cranio-Maxillofacial Surgery, Inselspital, Bern University Hospital, University of Bern, CH-3010 Bern, Switzerland
3. Pathology Department, G. Papanikolaou Hospital, 57010 Thessaloniki, Greece
4. Department of Oral Medicine and Maxillofacial Pathology, Aristotle University, 54124 Thessaloniki, Greece