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

Filters

My NCBI Filters

Results by year

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

Year Number of Results
1968 1
1972 1
1977 4
1979 2
1984 1
1985 2
1986 2
1987 7
1988 2
1989 7
1990 4
1991 1
1992 3
1993 1
1994 5
1995 7
1996 5
1997 5
1998 8
1999 11
2000 8
2001 19
2002 18
2003 33
2004 29
2005 32
2006 34
2007 47
2008 50
2009 46
2010 77
2011 62
2012 81
2013 62
2014 41
2015 67
2016 54
2017 56
2018 60
2019 36
2020 45
2021 39
2022 44
2023 13
2024 0

Text availability

Article attribute

Article type

Publication date

Similar articles for PMID: 18514996

1,032 results

Results by year

Filters applied: . Clear all
Page 1
1,032 results