NCT02306395.

Study name	Endometrial local injury to improve the outcome of embryo transfer
Methods	RCT
Participants	Women with RIF(≥ 2) of embryo transfer
Interventions	Intervention: endometrial local injury is carried in the first 3‐5 days after menstrual period at the same time of hysteroscopy. Control: hysteroscopy only
Outcomes	Live birth, clinical pregnancy
Starting date	December 2014
Contact information	Yi Li, 8613548550909, 51261886@qq.com, Yunhai Chuai: +8618810892004, wangyh85@foxmail.com Aiming Wang: +8618600310258, one_army@sina.com
Notes	Trial registration status on 3 July 2020: unknown Author correspondence attempted but unsuccessful