A Retrospective Study of Letrozole Treatment Prior to Human Chorionic Gonadotropin in Women with Polycystic Ovary Syndrome Undergoing In Vitro Fertilization at Risk of Ovarian Hyperstimulation Syndrome.
Chen Y, Yang T, Hao C, Zhao J.
Med Sci Monit. 2018 Jun 20;24:4248-4253. doi: 10.12659/MSM.910743.
Impact of Intrauterine Administration of Human Chorionic Gonadotropin before Intrauterine Insemination in Infertile Women: A Randomized Controlled Trial.