青岛地区围产儿先天缺陷二级预防现状分析
修新红,王晓明,陈玉华
Current situation analysis of secondary prevention of prenatal birth defects in Qingdao
XIU Xin-hong, WANG Xiao-ming, Chen Yu-hua
中国儿童保健杂志 . 2011, (7): 653 -655 .