Full text
PDFPage 403
letter . 1982 Apr;72(4):403. doi: 10.2105/ajph.72.4.403
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.