Objective: To assess the role of office hysteroscopy (OH) in the evaluation of infertile women with normal HSG who fail to conceive after undergoing controlled ovarian stimulation/intrauterine insemination (COS/IUI). Design: Prospective cohort study. Materials and methods: The study included 141 patients with absent pelvic pathology on trans vaginal sonography and HSG and history of f... https://www.roneverhart.com/Clear-Zig-Zag-Pet-Gate/