[1] Flemish Netherlands Geriatr Oral Res Grp, BENECOMO, Ghent, Belgium
[2] Flemish Netherlands Geriatr Oral Res Grp, BENECOMO, Nijmegen, Netherlands
[3] Radboud Univ Nijmegen, Med Ctr, Dept Oral Funct & Prosthet Dent, NL-6525 ED Nijmegen, Netherlands
[4] Birkhoven Careestate, Amersfoort, Netherlands
[5] Univ Ghent, Dept Community Dent & Oral Publ Hlth, B-9000 Ghent, Belgium
[6] Radboud Univ Nijmegen, Med Ctr, Dept Prevent & Restorat Dent, NL-6525 ED Nijmegen, Netherlands
[7] Maastricht Univ, Caphri Dept Gen Practice, NL-6200 MD Maastricht, Netherlands
[8] Maastricht Univ, Dept Hlth Serv Res, NL-6200 MD Maastricht, Netherlands
[9] Ctr Special Care Dent, Dept Dent Fear Disabil & Geriatr, Amsterdam, Netherlands