1. Department of Oral Surgery; Bernhard Gottlieb University Clinic of Dentistry; Medical University of Vienna; Vienna Austria
2. Unit Division of Dental Student Training and Patient Care; Bernhard Gottlieb University Clinic of Dentistry; Medical University of Vienna; Vienna Austria
3. Center for Medical Physics and Biomedical Engineering; Medical University of Vienna; Vienna Austria
4. Section for Clinical Biometrics; Center for Medical Statistics, Informatics and Intelligent Systems; Medical University of Vienna; Vienna Austria