Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

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.

Https

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.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
My NCBI Filters
Results by year

Table representation of search results timeline featuring number of search results per year.

Year Number of Results
1997 1
1999 1
2001 3
2002 5
2003 6
2004 2
2005 4
2006 3
2007 4
2008 7
2009 4
2010 3
2011 3
2012 2
2013 5
2014 5
2015 3
2016 5
2017 7
2018 8
2019 6
2020 6
2021 3
2022 2
2023 1
Text availability
Article attribute
Article type
Publication date

Similar articles for PMID: 19398546

90 results
Results by year
Filters applied: . Clear all
Page 1
90 results