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
1953 1
1954 1
1956 3
1957 4
1961 1
1966 1
1967 2
1968 1
1969 1
1970 2
1971 1
1972 1
1973 1
1974 1
1975 2
1976 1
1977 2
1978 6
1980 7
1981 8
1982 10
1983 5
1984 7
1985 2
1986 14
1987 22
1988 8
1989 14
1990 10
1991 16
1992 21
1993 25
1994 37
1995 25
1996 34
1997 36
1998 41
1999 45
2000 59
2001 62
2002 57
2003 85
2004 91
2005 147
2006 188
2007 247
2008 498
2009 369
2010 110
2011 114
2012 129
2013 143
2014 133
2015 134
2016 144
2017 143
2018 120
2019 136
2020 115
2021 124
2022 137
2023 56
2024 8

Text availability

Article attribute

Article type

Publication date

Similar articles for PMID: 19393385

3,553 results

Results by year

Filters applied: . Clear all
Page 1
3,553 results