1. Centre for Oral Clinical Research, Institute of Dentistry, Faculty of Medicine and Dentistry Queen Mary University of London London UK
2. Dental School, Department of Medicine and Dentistry Università di Parma Parma Italy
3. Department of Biomedical, Surgical and Dental Sciences Università degli Studi di Milano Milan Italy
4. IRCCS, Ospedale Galeazzi Sant'Ambrogio Milan Italy
5. Medacta International SA Castel San Pietro Switzerland
6. Department of Periodontology, School of Dental Medicine University of Bern Bern Switzerland