A matched case–control study of preterm birth in one hospital in Beijing, China

por Huang, AiQun, Jin, Xi, Liu, XiaoHong, Gao, SuHong
Publicado 2015

Risk Factors for Preterm Birth in Five Maternal and Child Health Hospitals in Beijing

por Zhang, Yun-Ping, Liu, Xiao-Hong, Gao, Su-Hong, Wang, Jia-Mei, Gu, Yue-Shan, Zhang, Jiu-Yue, Zhou, Xia, Li, Qing-Xia
Publicado 2012