1. Academic Unit of Oral & Maxillofacial Surgery School of Clinical Dentistry, University of Sheffield Sheffield UK
2. Unit of Oral & Maxillofacial Pathology School of Clinical Dentistry, University of Sheffield Sheffield UK
3. Department of Oral & Maxillofacial Radiology School of Clinical Dentistry, University of Sheffield Sheffield UK
4. Department of Oral & Maxillofacial Surgery Royal Hallamshire Hospital Sheffield UK