1. American Psychiatric Association (1987), Diagnostic and Statistical Manual of Mental Disorders, 3rd edition-revised (DSM-III-R). Washington, DC. American Psychiatric Association
2. Mini-compendium of rating scales for states ol anxiety, depression, mania, schizophrenia with corresponding DSM-III syndromes;Bech;Acta Psychiatr Scand Suppl,1986
3. Childhood obsessive compulsive disorder: a two-year prospective follow-up study of a community sample;Berg;J Am Acad Child Adolese Psychiatry,1989
4. “Theory of mind” in Asperger's syndrome;Bowler;J Child Psychol Psychiatry,1992
5. The global assessment scale: a procedure lor measuring overall severity of psychiatric disturbance;Endicott;Arch Gen Psychiatry,1970