Affiliation: | 1. Department of Oral Surgery and Stomatology, University of Bern, Bern, Switzerland;2. Department of Oral Surgery, Medical University of Vienna, Vienna, Austria;3. Laboratory of Oral Cell Biology, School of Dental Medicine, University of Bern, Bern, Switzerland;4. Department of Oral Biology, Medical University of Vienna, Vienna, Austria;5. Department of Periodontology, University of Bern, Bern, Switzerland;6. University of Zürich, Zürich, Switzerland |