Affiliation: | 1. Department of Conservative Dentistry, University of Heidelberg, Heidelberg, Germany;2. Mannheim Research Institute for the Economics of Aging (MEA), University of Mannheim, Mannheim, Germany;3. Department of Periodontology, Leeds Dental Institute and Division of Biostatistics, Leeds Institute of Genetics, Health & Therapeutics, University of Leeds, Leeds, UK;4. Department of Prosthodontics, University of Heidelberg, Heidelberg, Germany |