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 network was constructed using a median joining with MP (maximum parsimony) algorithm as implemented in the Network 4.6 program. The size of the circles is proportional to the number of samples. The data used for comparison have been taken from the literature (See Text S1).
