Carrier Rate of Streptococcus Pneumoniae in Healthy Children Aged 2~6 in Two Kindergartens in Guangzhou City
WU Ben-Quan, TANG Yang-Chun, ZHU Jia-Xin, TAN Shu-Qing, ZHANG Kou-Xin, BI Xiao-Gang
中国当代儿科杂志 . 2001, (5): 529 -531 .