Fig. 1.
Portable chest radiograph from a patient with H1N1 2009 viral pneumonitis and acute respiratory distress syndrome, showing diffuse bilateral airspace opacities.
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.