Affiliation: | 1. Center for Dentistry and Oral Hygiene, University Medical Center Groningen, University of Groningen, , Groningen, The Netherlands;2. Department of Oral and Maxillofacial Surgery, University Medical Center Groningen, University of Groningen, , Groningen, The Netherlands;3. Department of Medical and Oral Microbiology, University Medical Center Groningen, University of Groningen, , Groningen, The Netherlands |