- Correspondence to Dr Matthias Mottini, Department of Cranio-Maxillofacial Surgery, Inselspital, Bern University Hospital, University of Bern, Bern 3010, Switzerland;
- Received November 29, 2016
- Revised January 20, 2017
- Accepted April 4, 2014
- First published March 3, 2017.
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