| Affiliation: | 1. Department of Periodontology, University Witten/Herdecke, Witten, Germany;2. Periodontology Unit, UCL Eastman Dental Institute, London, UK;3. Department of Periodontology, Faculty of Odontology, Malm? University, Malm?, Sweden;4. Department of Implant Dentistry, Faculty of Medicine and Dentistry, University of Murcia, Murcia, Spain;5. Clinic for Fixed and Removable Prosthodontics and Dental Material Science, University of Zurich, Zurich, Switzerland;6. Department of Periodontology, Julius‐Maximilians‐University Wuerzburg, Wuerzburg, Germany |
