The effect of intrauterine insemination preceding frozen-thawed elective single embryo transfer in couples with unexplained subfertility
Introduction This prospective randomized controlled trial aimed to evaluate the effect of intrauterine insemination (IUI) before frozen-thawed elective single embryo transfer (FT-eSET).Material and methods A total of 200 couples with unexplained subfertility underwent in-vitro fertilization (IVF) treatment.Patients were randomly assigned to either