1. Community Dentistry and Oral Public Health; Dental School; Ghent University; Ghent Belgium
2. BENECOMO; Flemish-Netherlands Geriatric Oral Research Group, Ghent, Belgium; Nijmegen The Netherlands
3. Department of Oral Function and Prosthetic Dentistry; Radboud University Nijmegen Medical Centre; The Netherlands
4. University of Applied Sciences; Utrecht The Netherlands
5. The Opbouw Foundation Birkhoven Zorggoed Soesterweg 533; Amersfoort The Netherlands
6. Pharmaceutical Care Unit; Faculty of Pharmaceutical Sciences; Ghent University; Ghent Belgium
7. Department of Oral Public Health Faculty of Odontology; Malmö University; Malmo Sweden