1 Department of Oral and Maxillofacial Surgery, Dumfries and Galloway Royal Infirmary, Cargenbridge, Dumfries DG2 8RX, Scotland. Electronic address: callumwemyss@nhs.net.
2 Department of Oral and Maxillofacial Surgery, Dumfries and Galloway Royal Infirmary, Cargenbridge, Dumfries DG2 8RX, Scotland. Electronic address: garmon.bell@nhs.net.