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
1992 2
1993 4
1994 9
1995 12
1996 13
1997 7
1998 7
1999 8
2000 14
2001 13
2002 14
2003 10
2004 17
2005 16
2006 19
2007 22
2008 27
2009 23
2010 30
2011 45
2012 27
2013 24
2014 27
2015 33
2016 31
2017 38
2018 32
2019 29
2020 31
2021 35
2022 32
2023 32
2024 10

Text availability

Article attribute

Article type

Publication date

Search Results

619 results

Results by year

Filters applied: . Clear all
Page 1
619 results