1. Laboratory for Cell and Tissue Engineering, Department of Obstetrics, University Hospital ZurichUniversity of Zurich Zurich Switzerland
2. Product Development Regeneratives & BiologicsNobel Biocare AG Kloten Switzerland
3. Material Research and Surface TechnologiesNobel Biocare AG Kloten Switzerland
4. Department of Prosthodontics, Institute of Odontology, Sahlgrenska AcademyUniversity of Gothenburg Göteborg Sweden