
Study on results of immunization service model of improving the timeliness coverage of the first dose of hepatitis B vac- cine among newborns in the poor area .
China Tropical Medicine ›› 2007, Vol. 7 ›› Issue (10) : 1740-1742.
Study on results of immunization service model of improving the timeliness coverage of the first dose of hepatitis B vac- cine among newborns in the poor area .
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