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.
Medline citations with the words “Internet”, “World Wide Web”, or “WWW” by publication year. The actual count for the 1996 figure is 392, based on approximately 80% of the database currently indexed; the amount projected after 100% of the indexing is completed is 490.
