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

My NCBI Filters
Results by year

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

Year Number of Results
1979 1
1980 3
1981 3
1982 2
1983 2
1984 1
1985 1
1986 6
1987 5
1988 7
1989 2
1990 3
1991 8
1992 5
1993 6
1994 8
1995 15
1996 15
1997 11
1998 21
1999 21
2000 20
2001 24
2002 29
2003 39
2004 29
2005 46
2006 51
2007 59
2008 81
2009 84
2010 93
2011 99
2012 129
2013 151
2014 209
2015 247
2016 260
2017 279
2018 314
2019 376
2020 420
2021 535
2022 577
2023 8
Text availability
Article attribute
Article type
Publication date

Search Results

3,863 results
Results by year
Filters applied: . Clear all
Page 1
3,863 results