title: A chromosome survey of a population of mentally retarded persons.
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D002869:Chromosome Aberrations / Q000453:epidemiology*; D025063:Chromosome Disorders; D003410:Cri-du-Chat Syndrome / Q000453:epidemiology; D004314:Down Syndrome / Q000453:epidemiology; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007232:Infant, Newborn, Diseases / Q000453:epidemiology; D008607:Intellectual Disability / Q000235:genetics*; D007713:Klinefelter Syndrome / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D011247:Pregnancy; D012606:Scotland; D012729:Sex Chromosome Aberrations / Q000453:epidemiology