[1] Radboud Univ Nijmegen, Med Ctr, Intellectual Disabil & Hlth, Dept Primary & Community Care, NL-6500 HB Nijmegen, Netherlands
[2] Univ Nevada, Dept Phys Therapy, Las Vegas, NV 89154 USA
[3] Erasmus MC, Univ Med Ctr, Dept Gen Practice, Intellectual Disabil Med, Rotterdam, Netherlands
[4] Hanze Univ Appl Sci Groningen, Res Grp Hlth Ageing Allied Hlth Care & Nursing, Groningen, Netherlands
[5] Univ Groningen, Univ Med Ctr Groningen, Dept Hlth Psychol, Groningen, Netherlands
[6] Radboud Univ Nijmegen, Med Ctr, Dept Primary & Community Care, NL-6500 HB Nijmegen, Netherlands