Fig. 4.
Forest plot of ORs and 95% CIs for the association of maternal upper respiratory tract infection/influenza and complex CHD
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.