The Cochrane reviewers analyzed 13 studies that included women who were all undergoing embryo transfer. Participants were randomized into groups being administered either ultrasound-guided or clinical touch embryo transfer technique.

• Cochrane评价人员对13项包括所有进行胚胎植入女性的研究进行了分析。参与者随机分为超声引导组和临床触诊组。