中国西部14个项目县12~23月龄儿童计划免疫现况研究

张妍,周虹,王燕

Study on immunization status among children aged 12~23 months in 14 counties of western China

ZHANG Yan,ZHOU Hong,WANG Yan

中国儿童保健杂志 . 2013, (8): 796 -798 .