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中文
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Editors Introduction
Prevalence and risk factors of preterm birth among singletons from 2013 to 2017 in Tongzhou district of Beijing
MA Hai-hui, JIN Chu-yao, WANG Hai-jun, LIU Zheng, LIN Li-zi, LIU Jue
journal1 . 2019, (
6
): 592 -596 . DOI: 10.11852/zgetbjzz2018-0944
