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
1994 62
1995 59
1996 60
1997 66
1998 73
1999 103
2000 82
2001 99
2002 106
2003 110
2004 149
2005 200
2006 229
2007 403
2008 526
2009 449
2010 489
2011 559
2012 556
2013 617
2014 509
2015 424
2016 464
2017 659
2018 684
2019 508
2020 528
2021 647
2022 688
2023 761
2024 318

Text availability

Article attribute

Article type

Publication date

Search Results

8,927 results

Results by year

Filters applied: . Clear all
Page 1
8,927 results