1. Mental Illness In General Health Care: An International Study;Üstün,1995
2. Prevalence of depressive symptoms in primary care;Zung;J Fam Pract,1993
3. Depression Guidelines Panel: Depression in Primary Care: Detection and Diagnosis: Clinical Practice Guidelines. U.S. Department of Health and Human Services, Public Health Service, Agency for Health Care Policy and Research. Doc. 93-0550.Washington, DC, 1993
4. An international study of the relationship between somatic symptoms and depression;Simon;N Engl J Med,1999
5. Depres II (Depression Research in European Society II): a patient survey of the symptoms, disability, and current management of depression in the community: DEPRES Steering Committee;Tylee;Int Clin Psychopharmacol,1999