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.
The frequency of use and perceived effectiveness of available systemic treatments for chronic GVHD in A) North and South America, and in B) Europe, Asia, Australia, Africa. The respondents were asked to express their opinion about effectiveness of treatment and the bars show the relative proportion of responses in each category.
