title: Clinical, biochemical & cytogenetic studies in mental retardation.
mesh_terms: D002869:Chromosome Aberrations / Q000150:complications; D025063:Chromosome Disorders; D006801:Humans; D008607:Intellectual Disability / Q000209:etiology / Q000235:genetics*; D008659:Metabolic Diseases / Q000150:complications; D013577:Syndrome