1. 1 Ceramic and Biological Dentistry Foundation, Kreuzlingen, Switzerland.
2. 2 Basic Science Department, Health Institute of Nova Friburgo, Federal Fluminense University, Brazil.
3. 3 Private Practice, Freiburg, Germany.
4. 4 Board of Directors of the Academy of Osseointegration.
5. 5 Department of Periodontology and Endodontics, School of Dental Medicine, Stony Brook University, Stony Brook, New York.
6. 6 Restorative Dentistry, School of Dental Medicine, State University of New York, Buffalo, New York.
7. 7 CleanImplant Foundation, Berlin, Germany.
8. 8 Department of Oral and Maxillofacial Plastic Surgery, University of Cologne, Köln, Germany.
9. 9 Department of Prosthodontics, Tufts University School of Dental Medicine, Boston, Massachusetts.
10. 10 Swiss Biohealth Clinic, Kreuzlingen, Switzerland.
11. 11 Frankfurt Oral Regenerative Medicine, Clinic for Maxillofacial and Plastic Surgery, Johann Wolfgang Goethe University, Frankfurt Am Main, Germany.