1. Trainee Doctor, Regional Maxillofacial Unit, Southern General Hospital, Glasgow
2. This work was carried out at the Regional Maxillofacial Unit of the Southern General Hospital, Glasgow.
3. Consultant, Maxillofacial/Cleft Surgeon, Regional Maxillofacial Unit, Southern General Hospital, Glasgow
4. Consultant, Maxillofacial/Craniofacial Surgeon, Regional Maxillofacial Unit, Southern General Hospital, Glasgow
5. Consultant, Maxillofacial/Head and Neck Surgeon, Bradford Teaching Hospitals NHS Foundation Trust