According to the results of this study, local injury to the endometrium on the day of oocyte retrieval disrupts the receptive endometrium and has a negative impact on implantation and IVF outcomes.

This article has been retracted at the request of the Editor and the ASRM Publications Committee, based on the results of an investigation which found serious methodological flaws in the study.

FETs can be performed instead of fresh ETs to improve the outcome of ART in highly selected patients.

Purpose To evaluate the predictive value of basal serum anti-müllerian hormone level and small antral follicle count for high ovarian response to controlled ovarian hyperstimulation. Methods A total of 159 patients were prospectively included. Basal serum anti-müllerian hormone and small antral follicle count (2-6 mm) were measured. Results Small antral follicle count and anti-müllerian hormone have similar predictive accuracy for high ovarian response with area under curve of 0.961 and 0.922, respectively. The sensitivity and specificity for prediction of high ovarian response were 89% and 92% for small antral follicle count and 93% and 78% for anti-müllerian hormone at the cutoff values of ≥ 16 and ≥ 34.5 pmol/l, respectively. Conclusions Small antral follicle count and anti-müllerian hormone are equally accurate predictors of high ovarian response and facilitate determination of the optimal strategy for controlled ovarian hyperstimulation.

The addition of letrozole to the GnRH antagonist for poor responders does not improve the outcome of assisted reproductive technology cycles. The MF protocol remains the most appropriate protocol in poor responders.