1. World Health Organization. WHO expanded programme on immunisation. Report of 14th Global Advisory Group (Antalya, Turkey, Oct 14–18, 1991).Geneva:WHO,1991:WHO/EPI/GEN/92.1.
2. Status of hepatitis B immunization programmes in 1998;Kane;Vaccine,1998
3. Recommendations of the Immunisation Practices Advisory Committee. Recommendations for protection against viral hepatitis;Centers for Disease Control;MMWR,1985
4. Immunisation against hepatitis B;International Group;Lancet,1988
5. Informal consultation on quadrivalent diphtheria-tetanus-pertussis-hepatitis B vaccine: final report;World Health Organization,1992