Peri-Implantitis

• Knut N. Leknes — Bergen, Norway
• Knut N. Leknes — Bergen, Norway

• Josep Martínez — Sant Cugat del Vallès, Barcelona, Spain

• 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

• Folktandvården Skanstull — Stockholm, Sweden
• Folktandvården Kaniken — Uppsala, Sweden

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

• International University of Catalunya — Barcelona, Spain

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