Peri-implantitis

• Spesdent — Oslo, Norway
• Colosseum Majorstuen — Oslo, Norway
• Bjerke Tannmedisin AS — Oslo, Norway
• Odontologiska Institutionen — Jönköping, Sweden

Not specified

• Universitat Internacional de Catalunya — Barcelona, Catalonia, Spain

• University of Maryland, School of Dentistry, Department of Periodontics — Baltimore, Maryland, United States
• The Harvard School of Dental Medicine — Boston, Massachusetts, United States
• Tufts University, School of Dental Medicine, Department of Oral Medicine — Boston, Massachusetts, United States
• University of Michigan, School of Dentistry, Department of Periodontics and Oral Medicine — Ann Arbor, Michigan, United States

• Department of Periodontology, University of Bern — Bern, Switzerland

• International University of Catalunya — Barcelona, Spain

• The University of Western Australia — Perth, Western Australia, Australia

• ICOA Noroeste SLP — Las Rozas de Madrid, Madrid, Spain

• IRCCS Istituto Ortopedico Galeazzi — Milan, Italy

• Faculty of oral and dental medicine,FUE, Cairo,Egypt — Cairo, Egypt