Value of the serum estradiol level for preventing ovarian hyperstimulation syndrome: a retrospective case control study.

Objective: To assess the value of different serum E(2) cut-off levels for predicting women at risk for ovarian hyperstimulation syndrome (OHSS).

Design: Retrospective case-control study of a cohort of women undergoing assisted reproduction treatment (ART) over 12 months.

Setting: Tertiary university hospital.