1. 1Diagnostic and Statistical Manual of Mental Disorders, 4th edn. 1994, American Psychiatric Association, Washington, DC.
2. 2Mental Health: New Understanding, New Hope. 2001, The World Health Report. World Health Organization, Geneva.
3. Genetic epidemiology of major depression: review and meta-analysis;Sullivan;Am J Psychiatry,2000
4. Social functioning in depression: a review;Hirschfeld;J Clin Psychiatry,2000
5. Gender differences in chronic major and double depression;Kornstein;J Affect Disord,2000