1. Global epidemiology of infectious diseases;Beal,1991
2. Health Information for International Travel, 1991,1991
3. Tuberculosis among foreign-born persons entering the United States;MMWR,1990
4. Guidelines for preventing the transmission of tuberculosis in health-care settings with special focus on HIV-related issues;MMWR,1990
5. Immunization Practices Advisory Committee: Typhoid immunization;MMWR,1990