Full text
PDFPage 296
. 1973 Feb 3;1(5848):296. doi: 10.1136/bmj.1.5848.296
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.