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
1975 2
1977 6
1978 3
1980 11
1981 4
1982 150
1983 489
1984 534
1985 588
1986 631
1987 567
1988 603
1989 615
1990 567
1991 567
1992 555
1993 626
1994 888
1995 1242
1996 1287
1997 1341
1998 1492
1999 1588
2000 1762
2001 1874
2002 1842
2003 1855
2004 2072
2005 2100
2006 2086
2007 2214
2008 2265
2009 2200
2010 2288
2011 2194
2012 2230
2013 2297
2014 2143
2015 2129
2016 1855
2017 1758
2018 1894
2019 2116
2020 2163
2021 2055
2022 398
2023 96
2024 13

Text availability

Article attribute

Article type

Publication date

Search Results

55,957 results

Results by year

Filters applied: . Clear all
Page 1
[No title available]
[No authors listed] [No authors listed] PMID: 33981085 Free article.
[No title available]
[No authors listed] [No authors listed] PMID: 36302218 Free article.
[No title available]
[No authors listed] [No authors listed] PMID: 32624246
[No title available]
[No authors listed] [No authors listed] PMID: 32929195 Free article.
[No title available]
[No authors listed] [No authors listed] PMID: 32959267
[No title available]
[No authors listed] [No authors listed] PMID: 33329550 Free article.
[No title available]
[No authors listed] [No authors listed] PMID: 32089832 Free article.
[No title available]
[No authors listed] [No authors listed] PMID: 32593783
[No title available]
[No authors listed] [No authors listed] PMID: 33815406 Free article.
[No title available]
[No authors listed] [No authors listed] PMID: 21049005 Free article.
55,957 results
You have reached the last available page of results. Please see the User Guide for more information.