title: Possible risk factors and signs of mental retardation (MR)--comparative study of mentally retarded and normal children.
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008607:Intellectual Disability / Q000175:diagnosis / Q000209:etiology / Q000517:prevention & control*; D007564:Japan; D011247:Pregnancy; D012189:Retrospective Studies; D012306:Risk