1. Private Clinic for Oral- and Maxillofacial Surgery, Kärntnerstraße 62, 9900 Lienz, Austria
2. Department of Oral and Maxillofacial Surgery, University Medical Center Mainz, Augustusplatz 2, 55131 Mainz, Germany
3. Department of Engineering & IT, Carinthia University of Applied Sciences, Europastraße 4, 9524 Villach, Austria