INPLASY2021110077 Effects of Acupuncture on the Pregnancy Outcomes of Frozen-thawed Embryo Transfer: A Protocol of Systematic Review and Meta-analysis Keywords: Infertility; Acupuncture; Frozen-thawed embryo transfer (FET); Pregnancy outcomes; Endometrial morphology Download PDF - 2021110077 Download 2nd Version - This version was published on 18 January 2022 and is not the current version. Download 1st Version - This version was published on 21 November 2021 and is not the current version. Review Status: Ongoing