Ebrahimi, Mahbod, et al. “Co-Treatment of Gonadotropin and Letrozole in Infertile Women With Endometriosis: A Double-Blind Randomized Clinical Trial”. International Journal of Reproductive BioMedicine (IJRM), vol. 20, no. 6, July 2022, pp. 483-90, doi:10.18502/ijrm.v20i6.11444.