H Linnard1, L Newman2, A W Barrett3. 1. Maxillofacial Unit, Queen Victoria Hospital NHS Foundation Trust, Holtye Road, East Grinstead RH19 3DZ, West Sussex, UK. Electronic address: hannah.linnard@qvh.nhs.uk. 2. Maxillofacial Unit, Queen Victoria Hospital NHS Foundation Trust, Holtye Road, East Grinstead RH19 3DZ, West Sussex, UK. 3. Department of Histopathology, Queen Victoria Hospital NHS Foundation Trust, Holtye Road, East Grinstead RH19 3DZ, West Sussex, UK.