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

Filters

My NCBI Filters

Results by year

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

Year Number of Results
1980 6
1981 14
1982 19
1983 23
1984 17
1985 18
1986 14
1987 10
1988 16
1989 15
1990 17
1991 15
1992 16
1993 9
1994 4
1995 3
1996 1
2024 0

Text availability

Article attribute

Article type

Publication date

Search Results

217 results

Results by year

Filters applied: . Clear all
Page 1
217 results