A longitudinal assessment of clinical services to the mentally retarded.
D000293:Adolescent; D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D003695:Delivery of Health Care; D006801:Humans; D008607:Intellectual Disability / Q000534:rehabilitation*; D007360:Intelligence; D008297:Male; D008923:Missouri; D010044:Outpatient Clinics, Hospital; D012744:Sex Ratio; D012959:Socioeconomic Factors