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[Ambient PM2.5 during pregnancy and risk on preterm birth].
Cheng Y, Feng Y, Duan X, Zhao N, Wang J, Li C, Guo P, Xie B, Zhang F, Wen H, Li M, Wang Y, Wang S, Zhang Y. Cheng Y, et al. Among authors: wang j, wang y, wang s. Zhonghua Liu Xing Bing Xue Za Zhi. 2016 Apr;37(4):572-7. doi: 10.3760/cma.j.issn.0254-6450.2016.04.027. Zhonghua Liu Xing Bing Xue Za Zhi. 2016. PMID: 27087229 Chinese.
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