An official website of the United States government
Here's how you know
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.
As a library, NLM provides access to scientific literature. Inclusion in an NLM database does not imply endorsement of, or agreement with,
the contents by NLM or the National Institutes of Health.
Learn more:
PMC Disclaimer
|
PMC Copyright Notice
1Chief Neurosurgical Service, Chairman, Committee on Management of the Unconscious Patient, Massachusetts General Hospital, Boston, Massachusetts 02114 USA
1Chief Neurosurgical Service, Chairman, Committee on Management of the Unconscious Patient, Massachusetts General Hospital, Boston, Massachusetts 02114 USA
This article is distributed under the terms of the Creative Commons Attribution 4.0 International License, which permits unrestricted use and redistribution provided that the original author and source are credited.