1. Overview of clinical studies in developing countries;Coursaget,1993
2. Long-term efficacy of continuing hepatitis B vaccination in infancy in two Gambian villages;Whittle;Lancet,1995
3. Chen DS. Hepatitis B vaccines: status report on long term efficacy (abstract 147). Abstract volume “IX Triennial International Symposium on Viral Hepatits and Liver Disease, Rome April 21–25, 1996: 41.
4. The changing epidemiology of hepatitis B in the United States. Need for alternative vaccination strategies;Alter;JAMA,1990
5. Hepatitis B vaccination: the cost effectiveness of alternative strategies in England and Wales;Mangtani;J Epidemiol Community Health,1995