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.
Correlations of biomarkers with right ventricular pressure gradient (RVPG) in participants of study (A). Data are shown for SDMA (A), L-ornithine (B), and L-ornithine/L-arginine ratio (C). Open symbols represent baseline measurements taken at low altitude, filled symbols represent measurements taken at high altitude at the times specified in Methods.
