1. Evolution of activities in international biological standardization since the early days of the Health Organization of the League of Nations;Sizaret;Bull. WHO,1988
2. HIV infection and routine childhood immunization: a review;Clements;Bull. WHO,1987
3. Human immunodeficiency virus infection and routine childhood immunization;Von Reyn;Lancet,1987
4. Disseminated Mycobacterium bovis infection following BCG immunization in an HIV-infected infant;François,1988
5. Response to childhood vaccination in African children with HIV infections;Mvula,1988