1. BENECOMO; Flemish-Netherlands Geriatric Oral Research Group; Ghent Belgium
2. BENECOMO; Flemish-Netherlands Geriatric Oral Research Group; Nijmegen The Netherlands
3. Community Dentistry and Oral Public Health; Dental School; Ghent University; Ghent Belgium
4. Birkhoven Zorggoed; Amersfoort The Netherlands
5. University of Applied Sciences; Utrecht The Netherlands
6. Department of Oral Function and Prosthetic Dentistry; Radboud University Nijmegen Medical Centre; Nijmegen The Netherlands
7. Naarderheem; Vivium Zorggroep; Huizen The Netherlands
8. Caphri; Departments of Family Medicine and Health Services Research; Maastricht University; Maastricht The Netherlands