1. The epidemiology of obsessive compulsive disorder;Angst,1994
2. The epidemiology of obsessive-compulsive disorder in five US communities;Karno;Arch Gen Psychiatry,1988
3. The epidemiology and differential diagnosis of obsessive compulsive disorder;Rasmussen;J Clin Psychiatry,1994
4. Diagnostic and Statistical Manual of Mental Disorders;American Psychiatric Association,1994
5. Obsessive compulsive spectrum disorders;Hollander;Psychiatr Ann,1993