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
1993 1
1994 3
1995 8
1996 10
1997 10
1998 12
1999 21
2000 24
2001 19
2002 25
2003 43
2004 39
2005 33
2006 41
2007 55
2008 63
2009 65
2010 81
2011 66
2012 54
2013 61
2014 51
2015 43
2016 36
2017 43
2018 35
2019 34
2020 31
2021 20
2022 6
2023 5
2024 1

Text availability

Article attribute

Article type

Publication date

Search Results

922 results

Results by year

Filters applied: . Clear all
Page 1
922 results