Affiliation: | 1. Faculty of Medicine and Health Sciences, Dental School, Department of Periodontology and Oral Implantology, Ghent University, Ghent, Belgium;2. Faculty of Odontology, Department of Prosthodontics, Malm? University, Malm?, Sweden;3. Faculty of Medicine and Pharmacy, Dental Medicine, Vrije Universiteit Brussel (VUB), Brussels, Belgium |