Risk Factors in the Living Environment of Early Spontaneous Abortion Pregnant Women
LIU Xin-yan, BIAN Xu-ming,HAN Jing-xiu,CAO Zhao-jin,FAN Guang-sheng, ZHANG Chao ,ZHANG Wen-li ,ZHANG Shu-zhen,SUN Xiao-guang
Acta Academiae Medicinae Sinica . 2007, (5): 661 -664 .