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

Search Page

Filters

My Custom Filters

Results by year

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

Year Number of Results
1996 9
1997 30
1998 24
1999 29
2000 39
2001 34
2002 21
2003 36
2004 44
2005 33
2006 51
2007 50
2008 52
2009 77
2010 72
2011 77
2012 72
2013 76
2014 82
2015 58
2016 50
2017 44
2018 24
2019 27
2020 34
2021 28
2022 21
2023 6
2024 14

Publication date

Text availability

Article attribute

Article type

Additional filters

Article Language

Species

Sex

Age

Other

Search Results

1,110 results

Results by year

Filters applied: . Clear all
Page 1
1,110 results