R Ratansi1, J Hoole2, D A Mitchell3, A Kanatas4. 1. Leeds Teaching Hospitals and St James Institute of Oncology, Leeds General Infirmary, LS1 3EX. Electronic address: reshma.ratansi@gmail.com. 2. Huddersfield Royal Infirmary, RMO Building, Huddersfield HD3 3EA. Electronic address: Julie.Hoole@cht.nhs.uk. 3. Consultant Oral and Maxillofacial Surgeon, Calderdale and Huddersfield NHS Foundation Trust Huddersfield, West Yorkshire, United Kingdom. Electronic address: David.mitchell2@bthft.nhs.uk. 4. Leeds Teaching Hospitals and St James Institute of Oncology. Electronic address: a.kanatas@doctors.org.uk.