1 Department of Oral and Maxillofacial Surgery, University Hospital Schleswig-Holstein Campus Kiel, Kiel, Germany. Electronic address: [email protected].
2 Department of Oral and Maxillofacial Surgery, University Hospital Heidelberg, Heidelberg, Germany.
3 Department of Oral and Maxillofacial Surgery, University Medical Center Göttingen, Göttingen, Germany.
4 Department of Oral and Maxillofacial Surgery, Friedrich-Alexander University Erlangen-Nürnberg, Erlangen, Germany.
5 Department of Oral and Maxillofacial Surgery, University Medical Center Mainz, Mainz, Germany.
6 Department of Oral and Maxillofacial Surgery, University Medical Centre Tübingen, Tübingen, Germany.