Mental retardation: meeting the challenge.
D003156:Community Mental Health Services / Q000639:trends; D004495:Education of Persons with Intellectual Disabilities / Q000639:trends; D006291:Health Policy / Q000639:trends; D006301:Health Services Needs and Demand / Q000639:trends; D006801:Humans; D008607:Intellectual Disability / Q000209:etiology / Q000534:rehabilitation*; D007360:Intelligence; D007391:International Cooperation; D011379:Prognosis; D012306:Risk; D014944:World Health Organization