3Global Alliance for Vaccines and Immunization (GAVI)/ Executive plan of children vaccine fund collaborate item[S]. 2002.
4Hsh HY, Chang MH, Liaw SH, et al. Changes of hepatitis B surface antigen variants in carrier children before and ',ffter universal vaccination in Taiwan. Hepatology ,2009,30:1312-7.
5Dumpis U, Holmes EC, M Mendy, et al. Transmission of hepatitis B virus infection in Gambian families revealed by phylngenetie analysis. J. Hepatol. 2001,35:99-104.