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
1983 1
1988 1
1989 2
1990 5
1992 2
1993 5
1994 2
1995 2
1997 3
1998 2
1999 4
2000 8
2001 13
2002 16
2003 28
2004 29
2005 23
2006 23
2007 20
2008 35
2009 33
2010 24
2011 32
2012 28
2013 42
2014 41
2015 45
2016 43
2017 50
2018 57
2019 58
2020 57
2021 89
2022 119
2023 93
2024 30

Text availability

Article attribute

Article type

Publication date

Search Results

964 results

Results by year

Filters applied: . Clear all
Page 1
964 results