Institution: | 1. Department of Periodontology, Faculty of Dentistry, University of Münster, Münster, Germany;2. Department of Conservative Dentistry, Heidelberg University, Heidelberg, Germany;3. Munich Center for the Economics of Aging, Max Planck Institute for Social Law and Social Policy, Munich, Germany;4. Department of Periodontology and Implant Dentistry, Cayetano Heredia Peruvian University, Lima, Peru |