1. Department of Cranio Maxillofacial Surgery; Inselspital; University of Bern; Bern Switzerland
2. Department of Oral Surgery and Stomatology; School of Dental Medicine; University of Bern; Bern Switzerland
3. Department of Oral and Maxillofacial Surgery; College of Dentistry; Universitat Internacional de Catalunya; Barcelona Spain
4. Robert K. Schenk Laboratory of Oral Histology; School of Dental Medicine; University of Bern; Bern Switzerland
5. Department of Preventive, Restorative and Pediatric Dentistry; University of Bern; Bern Switzerland
6. Department of Oral Biology; Medical University of Vienna; Vienna Austria