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
1998 1
2000 4
2001 2
2002 4
2003 3
2004 1
2005 7
2006 11
2007 15
2008 52
2009 57
2010 63
2011 50
2012 58
2013 55
2014 77
2015 53
2016 48
2017 38
2018 57
2019 45
2020 40
2021 44
2022 34
2023 41
2024 9

Text availability

Article attribute

Article type

Publication date

Search Results

735 results

Results by year

Filters applied: . Clear all
Page 1
735 results