- Correspondence to Dr Matthias Mottini, Department of Cranio-Maxillofacial Surgery, Inselspital, Bern University Hospital, University of Bern, Bern 3010, Switzerland;
- Received 29 November 2016
- Revised 20 January 2017
- Accepted 4 April 2014
- Published online 26 September 2017.
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.