Endometrial Foxp3+ cells: A potential indicator of human chorionic gonadotropin intrauterine perfusion for patients with recurrent implantation failure. (September 2015) - Diao, L.H.; Liu, C.C.; Huang, C.Y.; Liang, P.Y.; Lian, R.C.; Zhang, T.; Chen, X.; Li, Y.Y.; Zeng, Y.