Full Text
The Full Text of this article is available as a PDF (99.2 KB).
editorial . 2003 Jun;74(6):695–697. doi: 10.1136/jnnp.74.6.695
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.