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
1967 1
1979 1
1981 3
1982 2
1983 4
1984 4
1985 2
1986 4
1987 9
1988 12
1989 4
1990 1
1991 1
1992 5
1993 2
1994 5
1995 11
1996 4
1997 17
1998 3
1999 5
2000 7
2001 6
2002 4
2003 7
2004 1
2005 6
2006 4
2007 4
2008 10
2009 13
2010 9
2011 6
2012 13
2013 13
2014 10
2015 10
2016 8
2017 7
2018 5
2019 3
2020 7
2021 3
2022 2
Text availability
Article attribute
Article type
Publication date

Search Results

237 results
Results by year
Filters applied: . Clear all Unknown field was ignored: [Author]
Page 22
237 results