5Chang MH, Chen CJ, Lai MS, et al. Universal hepatitis B vaccination in Taiwan and the incidence of hepatocellular carcinoma in children. N Engl J Med, 1997, 336: 1855-1859.
6Centers for Disease Control and Pre-vention. Recommended childhood immunization schedule-United States, 2000. Mor Mortal Wkly Rep, 2000, 49:35-38.
7Ridge JP, Fuchs EJ, Matzinger P. Neonatal tolerance revisited: turning on newborn T cells with dendritic cells. Science, 1996, 271: 1723-1726.
8Sarzotti M, Robbins DS, Hoffman PM. Induction of protective CTL responses in newborn mice by a murine retro-virus. Science, 1996, 271: 1726-1728.
9Forsthuber T, Yip HC, Lehmann PV. Induction of Th1 and Th2 immunity in neonatal mice. Science, 1996, 271: 1728-1730.
10Wang JS, Zhu QR. Infection of fetus with hepatitis B e antigen via the placenta. Lancet, 2000, 355: 989.