浅析美国的孕前保健特点及对我国的启示

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姚楠，王芳，许侠

Preconception care experience of the United States and its implications to China

Yao Nan,Wang Fang,Xu Xia

中国计划生育学杂志 . 2013, (6): 367 -370 . DOI: 10.3969/j.issn.1004-8189.2013.06