中国当代医药
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中国当代医药  2017, Vol. 24 Issue (25): 139-142    DOI:
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Utilization of healthybirth before pregnancy in the floating population
XU Xiao-yan, LYU Nian-qing, ZHA Shu-wei, FU Ya-li, CHENG Yan, XU Hao-qin
Institute of Planned Parenthood Research,Jiangsu Province,Nanjing 210036,China
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