1. People with intellectual disabilities must be designated a medically underserved population;Ackerman;Special Care in Dentistry: Official Publication of the American Association of Hospital Dentists, the Academy of Dentistry for the Handicapped, and the American Society for Geriatric Dentistry,2013
2. The aberrant behavior checklist: a behavior rating scale for the assessment of treatment effects;Aman;American Journal on Mental Deficiency,1985
3. Diagnostic and statistical manual of mental disorders: DSM-5;American Psychiatric Association,2013
4. Ethics and clinical research;Beecher;New England Journal of Medicine,1966
5. The Belmont report: Ethical principles and guidelines for the protection of human subjects of research;Belmont Report,1979