Affiliation: | 1. Department of Prosthodontics, Gerostomatology and Biomaterials, Center for Oral Health, University Medicine Greifswald, Greifswald, Germany;2. Institute for Community Medicine, University Medicine Greifswald, Greifswald, Germany;3. Unit of Periodontology, Department of Restorative Dentistry, Periodontology, Endodontology, Preventive Dentistry and Pedodontics, Center for Oral Health, University Medicine Greifswald, Greifswald, Germany;4. Department of Ophthalmology, University Medicine Greifswald, Greifswald, Germany |