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

Filters

My NCBI Filters

Results by year

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

Year Number of Results
1945 17
1946 28
1947 44
1948 80
1949 81
1950 73
1951 34
1952 30
1953 36
1954 46
1955 45
1956 74
1957 83
1958 101
1959 83
1960 75
1961 89
1962 114
1963 187
1964 296
1965 218
1966 238
1967 285
1968 336
1969 432
1970 402
1971 504
1972 474
1973 400
1974 473
1975 433
1976 376
1977 373
1978 315
1979 319
1980 286
1981 295
1982 343
1983 304
1984 349
1985 373
1986 355
1987 359
1988 323
1989 314
1990 333
1991 414
1992 384
1993 374
1994 315
1995 294
1996 321
1997 315
1998 355
1999 301
2000 329
2001 491
2002 432
2003 486
2004 519
2005 633
2006 645
2007 699
2008 756
2009 760
2010 842
2011 889
2012 898
2013 962
2014 912
2015 922
2016 925
2017 891
2018 910
2019 968
2020 963
2021 908
2022 1335
2023 1079
2024 403

Text availability

Article attribute

Article type

Publication date

PubMed (MeSH Keyword) for id: 222

30,666 results

Results by year

Filters applied: . Clear all
Page 1
30,666 results
You have reached the last available page of results. Please see the User Guide for more information.