Figure 1.
Changes of pressure gradient tricuspid valve regurgitation (PGTI) in patients with oral Bosentan after the operation.
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.