Full Text
The Full Text of this article is available as a PDF (149.6 KB).
. 2000 Jun 27;162(13):1864–1865.
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.