Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
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A lock (
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connected to the .gov website. Share sensitive
information only on official, secure websites.
The dotted line separates hosts with 100 or more mentions (left side of the dotted line) from hosts less than 100 mentions. 327 hosts were responsible for half of the mentions. See S3 Text for a list of common hosts vs total number of papers. The near linear log-log plot of rank ordered hosts versus URL mentions indicates a Zipfian distribution.
