1. Intellectual Disability Medicine, Department of General Practice; Erasmus Medical Centre; Rotterdam The Netherlands
2. Centre of Expertise in Intellectual Disabilities, Department of Allied Health; Ipse de Bruggen; Zoetermeer The Netherlands
3. Avans University of Applied Sciences, Department of Health Care; Breda The Netherlands
4. Prisma Foundation, Department of Health Care and Applied Sciences; Waalwijk The Netherlands
5. Physiotherapy Achter De Blauwe Deur, Department of Allied Health; Sint Michielsgestel The Netherlands
6. Pediatric Physiotherapy and Rehabilitation, Biomed; University of Hasselt; Hasselt Belgium
7. Department of Rehabilitation Medicine, School for Public Health and Primary care (CAPHRI); Maastricht University; Maastricht The Netherlands
8. Adelante Center of Expertise in Rehabilitation and Audiology, Department of Allied Health; Valkenburg and Hoensbroek The Netherlands