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
1965 2
1966 1
1967 1
1968 1
1969 3
1970 2
1971 2
1972 1
1974 1
1975 5
1976 7
1977 5
1978 3
1979 3
1980 6
1981 5
1982 6
1983 4
1984 5
1985 8
1986 7
1987 8
1988 16
1989 12
1990 16
1991 16
1992 29
1993 31
1994 42
1995 57
1996 30
1997 36
1998 21
1999 27
2000 36
2001 32
2002 28
2003 16
2004 11
2005 10
2006 11
2007 8
2008 18
2009 21
2010 13
2011 10
2012 10
2013 9
2014 13
2015 11
2016 23
2017 30
2018 22
2019 25
2020 22
2021 27
2022 16
2023 5
2024 0

Text availability

Article attribute

Article type

Publication date

Similar articles for PMID: 9070453

827 results

Results by year

Filters applied: . Clear all
Page 1
827 results