title: A chromosome survey of 1062 mentally retarded patients. Evaluation of a long-term study at the Rinnekoti institution, Finland.
mesh_terms: D002869:Chromosome Aberrations; D004314:Down Syndrome / Q000235:genetics; D005260:Female; D005387:Finland; D006801:Humans; D008607:Intellectual Disability / Q000235:genetics*; D008297:Male; D009030:Mosaicism