1. Centre of Regenerative Medicine for Skeletal Tissues, Department of Clinical Research, University of Bern, Bern, Switzerland.
2. Department of Oral Implantology and Prosthetic Dentistry, Academic Center for Dentistry Amsterdam (ACTA), Amsterdam, The Netherlands.
3. Department of Cranio-Maxillofacial Surgery, University Hospital of Bern, Bern, Switzerland.