1. Laboratory of Oral Cell Biology; School of Dental Medicine; 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; School of Dental Medicine; Universitat Internacional de Catalunya; Barcelona Spain
4. Department of Cranio-Maxillofacial Surgery; Bern University Hospital; Inselspital; Bern Switzerland
5. Robert K. Schenk Laboratory of Oral Histology; School of Dental Medicine; University of Bern; Bern Switzerland
6. Department of Oral Biology; Medical University of Vienna; Vienna Austria