An official website of the United States government
Here's how you know
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
PR, pregnancy rate; E2, estradiol. Total pregnancy rates in high responders (≥12 oocytes retrieved) in subgroups with different peak estradiol levels in the long and antagonist cycles