Risk factors and clinical features of ovarian pregnancy: a case–control study

por Zhu, Qian, Li, Cheng, Zhao, Wei-Hong, Yuan, Jiang-Jing, Yan, Ming-Xing, Qin, Guo-Juan, Zhang, Jian
Publicado 2014

Association between levonorgestrel emergency contraception and the risk of ectopic pregnancy: a multicenter case-control study

por Zhang, Jian, Li, Cheng, Zhao, Wei-Hong, Xi, Xiaowei, Cao, Shu-Jun, Ping, Hua, Qin, Guo-Juan, Cheng, Linan, Huang, He-Feng
Publicado 2015

Contraceptive Use and the Risk of Ectopic Pregnancy: A Multi-Center Case-Control Study

por Li, Cheng, Zhao, Wei-Hong, Meng, Chun-Xia, Ping, Hua, Qin, Guo-Juan, Cao, Shu-Jun, Xi, Xiaowei, Zhu, Qian, Li, Xiao-Cui, Zhang, Jian
Publicado 2014

Risk factors for ectopic pregnancy: a multi-center case-control study

por Li, Cheng, Zhao, Wei-Hong, Zhu, Qian, Cao, Shu-Jun, Ping, Hua, Xi, Xiaowei, Qin, Guo-Juan, Yan, Ming-Xing, Zhang, Duo, Qiu, Jun, Zhang, Jian
Publicado 2015