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
2002 2
2003 2
2004 3
2005 8
2006 5
2007 16
2008 16
2009 21
2010 22
2011 45
2012 40
2013 45
2014 69
2015 55
2016 55
2017 61
2018 69
2019 99
2020 103
2021 146
2022 130
2023 147
2024 174
2025 28

Publication date

Text availability

Article attribute

Article type

Additional filters

Article Language

Species

Sex

Age

Other

Search Results

1,219 results

Results by year

Filters applied: . Clear all
Page 1
1,219 results