Warning: The NCBI web site requires JavaScript to function. more...
An official website of the United States government
The .gov means it's official. Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you're on a federal government site.
The site is secure. The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.
structure in first source
Date introduced: February 13, 2008
MeSH Unique ID: C526485
Registry Number: 8F78EY72YL
Heading Mapped to: