title: Mental retardation in children.
mesh_terms: D001925:Brain Damage, Chronic / Q000209:etiology; D002648:Child; D002675:Child, Preschool; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D007223:Infant; D008607:Intellectual Disability / Q000209:etiology*; D008297:Male; D010154:Pakistan