1. Department of Oral Public Health, Academic Center for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam
2. Department of Oral Medicine, Academic Center for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam
3. Department of Oral and Maxillofacial Surgery, Amsterdam University Medical Center (UMC), Academic Center for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam
4. Radboud Institute for Health Sciences, Radboud University Nijmegen Medical Center, Nijmegen, The Netherlands
5. Department of Conservative Dentistry, Section for Translational Health Economics, Heidelberg University Hospital, Heidelberg, Germany