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

অনুযায়ী Zhu, Qian, Li, Cheng, Zhao, Wei-Hong, Yuan, Jiang-Jing, Yan, Ming-Xing, Qin, Guo-Juan, Zhang, Jian
প্রকাশিত BMJ Open (2014)

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

অনুযায়ী Zhang, Jian, Li, Cheng, Zhao, Wei-Hong, Xi, Xiaowei, Cao, Shu-Jun, Ping, Hua, Qin, Guo-Juan, Cheng, Linan, Huang, He-Feng
প্রকাশিত Sci Rep (2015)

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

অনুযায়ী 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
প্রকাশিত PLoS One (2014)

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

অনুযায়ী 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
প্রকাশিত BMC Pregnancy Childbirth (2015)