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.
WHO functional class at enrollment and 1-year follow-up. WHO functional class is similar between the three cohorts at enrollment, but at 1-year follow-up Operated patients have a statistically better WHO functional class compared with both Inoperable and Operable/No Surgery patients (P < .001). WHO = World Health Organization.
