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 1
2002 2
2003 3
2004 7
2005 7
2006 8
2007 12
2008 17
2009 15
2010 22
2011 35
2012 33
2013 37
2014 37
2015 41
2016 50
2017 54
2018 52
2019 66
2020 81
2021 92
2022 105
2023 102
2024 38

Text availability

Article attribute

Article type

Publication date

Search Results

815 results

Results by year

Filters applied: . Clear all
Page 1
815 results