1. Department of Oral Biology University Clinic of Dentistry, Medical University of Vienna Vienna Austria
2. Department of Oral Surgery University Clinic of Dentistry, Medical University of Vienna Vienna Austria
3. Institute of Medical Statistics Center for Medical StatisticsInformatics and Intelligent Systems, Medical University of Vienna Vienna Austria
4. Austrian Cluster for Tissue Regeneration Vienna Austria
5. Department of Periodontology School of Dental Medicine, University of Bern Bern Switzerland
6. Division of Anatomy Center for Anatomy and Cell Biology, Medical University of Vienna Vienna Austria