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

Year Number of Results
1964 1
1988 1
1990 2
1992 2
1993 4
1994 10
1995 11
1996 2
1997 5
1998 12
1999 15
2000 23
2001 19
2002 62
2003 64
2004 55
2005 62
2006 74
2007 107
2008 135
2009 140
2010 157
2011 144
2012 166
2013 159
2014 144
2015 130
2016 154
2017 131
2018 96
2019 90
2020 63
2021 6
Text availability
Article attribute
Article type
Publication date

PubMed Links for id: 999

1,998 results
Results by year
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1,998 results
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