Abstract
Get full access to this article
View all access options for this article.
References
1.
Gladman Jrf
et al. J Neurol Neurosurg Psychiatry
1993 ;56:960 -66 .
2.
Grossman HJ
Manual on terminology and classification in mental retardation . Washington, DC : AAMD , 1973 .
3.
Garraway
et al. Br Med J
1980 ; 281 : 827 -29 .