title: [Cytogenetic studies on 440 patients institutionalized for psychomotor retardation].
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002869:Chromosome Aberrations; D025063:Chromosome Disorders; D004314:Down Syndrome / Q000235:genetics*; D006760:Hospitalization; D006801:Humans; D007223:Infant; D008607:Intellectual Disability / Q000235:genetics*
vernacular_title: Etude cytogenetique de 440 patients institutionalises pour retard psychomoteur.