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Results by year

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

Year Number of Results
1939 1
1942 1
1948 2
1949 1
1950 3
1952 1
1953 1
1964 1
1987 2
1990 2
1991 1
1992 1
1995 3
1996 2
1997 1
1998 5
1999 4
2000 4
2001 1
2002 7
2003 7
2004 8
2005 9
2006 9
2007 8
2008 9
2009 11
2010 11
2011 18
2012 13
2013 9
2014 13
2015 23
2016 16
2017 15
2018 15
2019 14
2020 12
2021 20
2022 9
2023 19
2024 12
2025 3

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Similar articles for PMID: 21334405

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304 results