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.
a Forest plot for LBR and related subgroup analysis (hysteroscopy vs. no hysteroscopy before IVF). b Forest plot for CPR and related subgroup analysis (hysteroscopy vs. no hysteroscopy before IVF). c Forest plot PLR and related subgroup analysis (hysteroscopy vs. no hysteroscopy before IVF).
