1. Department of Prosthodontics, Aristotle University of Thessaloniki, Faculty of Health Sciences School of Dentistry Thessaloniki Greece
2. Division of Regenerative Dentistry and Periodontology, University Clinics of Dental Medicine University of Geneva Geneva Switzerland
3. Graduate and Postgraduate Prosthodontics Tufts University School of Dental Medicine Boston MA USA
4. Private Practice limited to Prosthodontics Thessaloniki Greece
5. Department of Restorative Sciences and Biomaterials Boston University Henry M. Goldman School of Dental Medicine Boston MA
6. Department of Restorative Sciences and Biomaterials Boston University Henry M. Goldman School of Dental Medicine Boston MA USA