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.
Trend in the number of publications in CVR with authorship from countries in SSA, 2005–2014. Single refers to publications with only one SSA country in its affiliations; multi refers to publications with more than one country in its affiliations but including at least one SSA country. International is used to refer to all countries outside SSA.
