Conclusion
In women undergoing FET, natural cycles (NC) and hormone replacement cycles (AC) resulted in comparable live birth rate while miscarriage rate was higher in hormone replacement cycles. Further multi-center randomized clinical trials are needed to confirm the relationship between AC and miscarriage.
Disclosure of interests
None declared.
Contribution to authorship
XL designed the study. HW and HC conducted data collection, analysis and writing the manuscript. JS conceived and designed the study.