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 NCBI Filters

Results by year

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

Year Number of Results
2000 5
2001 5
2002 8
2003 131
2004 290
2005 326
2006 330
2007 283
2008 287
2009 255
2010 232
2011 290
2012 251
2013 208
2014 248
2015 214
2016 151
2017 128
2018 93
2019 74
2020 49
2021 32
2022 5
2023 1
2024 1

Text availability

Article attribute

Article type

Publication date

Search Results

3,427 results

Results by year

Filters applied: . Clear all
Page 1
3,427 results