3. Shapiro S, German PS, Skinner EA, et al: An experiment to change detection and management of mental morbidity in primary care. Med Care 1987; 25: 327-339
4. Hoeper EW, Nycz GR, Kessler LG, et al: The usefulness of screening for mental illness. Lancet 1984; 1: 33-35
5. Johnstone A, Goldberg D: Psychiatric screening in general practice. Lancet 1976; 1: 605-608
6. Zung WW, Magill M, Moore JT, et al: Recognition and treatment of depression in a family medicine practice. J Clin Psychiatry 1983; 44: 3-6
7. Magruder-Habib K, Zung WW, Feussner JR: Improving physicians' recognition and treatment of depression in general medical care. Med Care 1990; 28(3): 239-250
8. U.S. Preventive Services Task Force: Guide to Clinical Preventive Services: an Assessment of the Effectiveness of 169 Interventions. Williams & Wilkins, Baltimore, Md, 1989: 261-263