Artificially prepared vitrified-warmed embryo transfer cycles are associated with an increased risk of pre-eclampsia Vrije Universiteit Brussel
RESEARCH QUESTION: What is the association between the development of pre-eclampsia and endometrial preparation prior to vitrified-warmed embryo transfer (frozen embryo transfer, FET)?
DESIGN: A retrospective cohort study at a tertiary university-based hospital, including a total of 536 pregnant patients who underwent a FET between 2010 and 2019 and delivered in the same institution; 325 patients underwent natural cycle FET (NC-FET) ...