Figure 6.
Forest plot of comparison: 1 LABA plus tiotropium versus tiotropium, outcome: 1.4 Mortality (all cause).
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.