
Sampling survey of national immunization program vaccination coverage of children aged 2 to 3 years in Pingdingshan city.
YANG Qiu-feng, HANG Jun-jie, WEI Hai-tao
China Tropical Medicine ›› 2014, Vol. 14 ›› Issue (5) : 618-620.
Sampling survey of national immunization program vaccination coverage of children aged 2 to 3 years in Pingdingshan city.
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