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
My NCBI Filters
Results by year

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

Year Number of Results
1953 2
1954 2
1956 1
1969 1
1971 2
1974 3
1975 6
1976 6
1977 10
1978 10
1979 13
1980 12
1981 8
1982 8
1983 9
1984 6
1985 10
1986 9
1987 9
1988 3
1989 8
1990 2
1991 2
1993 2
1994 2
1996 1
1999 1
2000 1
2001 2
2002 3
2003 1
2004 1
2005 2
2006 1
2008 3
2010 1
2012 1
2013 1
2014 1
2023 0
Text availability
Article attribute
Article type
Publication date

Similar articles for PMID: 2732849

166 results
Results by year
Filters applied: . Clear all
Page 1
166 results